So I know how to write and describe things pretty decently. Never had a problem there. But soon as it comes to describing the more R rated scenes and even lust I struggle a little. I mean I can describe it. But it's very bare minimum at best. I don't like this. I know what I want to say but trying to grab those words and throw them on the paper is a battle. What can I do for this? How can I improve? Is there any sites to help practice? I'm scared I won't be able to and I will fail at this. The stories are great and I want to try. I know I can also be very very hard on myself.

Also is there a place where we can ask for specific writing prompts? And not just use ones given to us.