@Sky, it's a little difficult to understand what you mean a lot of the time. I'm sure you know your English isn't that great. Keep your spell-checker on.
"Exorit" is not a word, and I think you meant "exotic" or "erotic".
You say you are "proportionate" at art. I think you mean "proficient"?
Communication is incredibly important. If you can not ask in English and you don't dare ask someone in your own language, don't draw porn. You are not ready to draw it.
Now if you are an art student I pray that you have heard "create what you love". If you love it, then others will too. That being said, you should have an understanding of the basics of anatomy. If you have anatomy down, you can draw porn. But trust me when I say, anatomy can take YEARS to master, if not decades.
Draw what you love and be brave, upload it. Ask for feedback. Listen to the feedback and improve. Don't give up on your English classes -- it is the only way you can talk to us...