Is this prompt a little farfetched? Maybe! Is it basically a porn-casting-setup with a more personal connection? Indeed! I am sure that we can turn that into an exciting story. Before I get into my intro, here's some of my preferences:

I tend to write stories as a 3rd-person, personal narrator. Most of the time, I prefer a slower, more relaxed pace, both within the story and on a META-level. Visual references can be quite fun and practical in my opinion, at least for outfits and sometimes architecture. Someone on DPP introduced me to the latter (you know who you are). In this intro, I take some control over the actions of your character, but I would obviously never do that in our story, and we can change any and all details of what I constructed below!

Kinks: CMNF, Gentle Maledom, Oral (both ways), Deepthroat, Bodyworship, Toys, BDSM (light bondage, orgasm control), performing, outfit play, recording, romance, making out, athletic men, skinny/fit women, SSC, aftercare, collar/leash), massages, oilplay, anal, interracial

Limits: Toilet play, sweatplay, sounding, petplay, animals, incest, cheating, pubic hair, blood, lactation, impregnation, pregnancy play, footplay (except for massages), deliberately ugly characters, raceplay, DDlg

Ding Ding. Five pairs of eyes locked onto Marcus as he fished a phone from the depths of his sweatpants. His grin spoke bounds, at least to his sister Melina. The rest of the small group was left confused - slowly turning their attention to the small stack of smartphones on the coffee table. Marcus' iPhone was part of that construct - so where did this second phone come from? And more importantly, why did Marcus have a second phone in the first place?
Melina knew, of course, rolling her eyes as she saw questions forming on the lips of her friends. She was not willing to explain the situation, too humiliating the truth. Instead, she pressed a button on her Joycon, and the next course of their Mario Cart tournament began to load. This distraction maneuver proved successful, but her brother was too caught up to pick up his own controller.

The race started, but his eyes were glued to the screen of his phone, a grin spanning ear to ear. Melina bit her tongue. Nope, she couldn't tell her friends. Her brother, a porn actor? The e-mail he got was likely the application of yet another Onlyfans-Model, or some other adventurous beauty, that wanted to "collab" with him. His reaction made it quite clear that they must have been his type. Oh well.
As he was still unwilling to part with his phone, Melina's friends finally voiced their concerns. Why do you have two phones, Marcus? What are you doing for work, Marcus? Luckily, he did not pay any mind to them... and finally picked his controller back up. "A man has secrets too", he simply stated, the phone back in his pocket. Even now, the joyful anticipation was written all over his chiseled face.

A few hours later, most of the group had fallen asleep. Empty bottles of wine and vodka were strewn all over the table, and Melina was busy trying to clean up a little. Fortunately for her, her best friend was still up too. As they picked up glasses tiptoeing around the sleeping bunch, Melina saw that her friend's eyes were glued to the phone pressing against the fabric of her brother's pants. She probably wouldn't find any slip until she knew what was going on with that thing. Oh well.
"It actually is his work phone. Kinda. He... you know what Onlyfans is, right? Yep, he's making bank there. People are into hunky tattoo models, apparently... who would have thought, right? Probably got a mail earlier, application of some chick that wants to get railed in his studio."
Melina didn't know what this admission would lead to - that her best friend found his account that very same night through his Reddit advertisements... and watched every free clip of his.

Two weeks later, the plan was to be executed: It was New Year's eve, and Marcus had invited his sister and all her friends to his new, swanky house far outside the city. Over seventy guests had made their way here to gawk at the villa he could afford with all that cash he made fucking skinny models onto cloud 9 with his pierced titan. Wasn't really fair, was it? Now, most of the guests didn't know this... but Melina did, and if it wasn't for the fancy Mercedes he got her for Christmas, she likely would have been quite disgusted.

Midnight rolled around, an arsenal of fireworks ready to reap some Ooohs and Aaahs - and while everyone did just that, Melina's best friend snuck back into the villa. She had seen that the had his work phone with him - now she just had to make a move. A grand gesture, really. After some time, she finally found his studio - an angular room with grey walls, no windows, but a thick curtain concealing a row of shelves and wardrobes. The centerpiece was certainly the ginormous futon bed at the center of the room, easily large enough to fit a whole basketball team onto it. Tripods and cameras encircled this playground, plenty of lighting equipment made sure that nothing could escape the lenses.
The shelves were filled with toys and tools, all sorts of things an adventurous creator might find a use for. For now, Melina's friend left all that there and made her way onto the bed. Barely a minute later, her "application" was complete. She had filled out the template on his profile in advance, all that had been left were the photos... which she took right now, right here, of course. A single selfie would surely be enough.

Back in the garden, Melina sighed. Marcus had just pulled his work phone from his pocket. Who in their right mind was even sending out porn applications on New Year's?? Talk about good new years resolutions... When she saw that Marcus just put the phone back into his pocket without as much as the faintest smile, she was at least a bit relieved.

Curiously enough, that was the last time she saw her brother that night.

So, that's the prompt! If you want to discuss the finer details, feel free to reach out. I left the best friend as vague as possible, so why don't you tell me what our heroine is like? How she poses for her selfie could tell us a lot about her too, so what is she up to? Another icebreaker: What kind of clips did she see of him on Reddit that made her want to "work" with him? Just a convoluted way to say that you can tell me plenty about your kinks, really! Oh, and if you have reference ideas/wishes for either character, let me know. I had a bad-boy kind of vibe in mind for the man, but we can change that, no worries. And if you want to see what kind of looks I was thinking about, just ask.

Take your time, I am patient!