a lot of cocksuckers like to flex how good their oral skills are but in reality u just looked like a whore. Let me give you some advice how to be a good cocksucker:

1) be casual about it. don't look too cocky or too desperate to suck his cock and just be casual about it. it's gonna be a nice surprise for ur master if u really know how to suck dick good.

2)be natural about it. don't follow a pattern or do specific stuff. ur master just care that you work his dick slowly and good. Taste every inch of that cock and balls giving it lot's of love.

3) always do what ur master says. don't try to take the lead.. always remember u are a cocksucker that's there to service ur master. always listen and do what he asked whether u like it or not. moans are a good indicator to know if you are doing a good job or not.

4) let him cum in your mouth. every guy that start experimenting with men always looks for that. there's really few females that let guys do that that's why u could really hit his maximum pleasure. There's no reason after u work him for so long... his dick is rock hard and his balls full of cum u break that rhythm of pleasure. Let him keep going in the same way.. welcome him to cum in ur mouth. if u do that u will hit his maximum pleasure and even the most silent guy will have to moan. let him keep going the same way. keep his dick warm in ur mouth and let him hit maximum pleasure and unload everything. it doesn't really matter what u do with the cum but it will be probably better to just swallow it.

5) keep sucking. after everything is done and u let him hit maximum pleasure he will probably be drained and tired. don't stay looking and keep sucking.. slowly cause it's sensitive. keep going that way until his cock fully deflates in ur mouth going soft. at that point u can let him go.

If u do all of these things it will be hard for any guy to forget ur mouth and will be really excited when him/you comeback to do it again.