Unlike other people here, I would urge you to perhaps reconsider your decision about going into porn.
You said that you're 21 years old. Do you know what you want to do with the rest of your life?
Do you want to make porn your permanent career, or is this something you are doing just for the short-term to make money, or just for fun?
In today's world of the internet, everything follows you. Even if you use a "porn name" (which almost all performers do), your videos of you having sex and your explicit photos will be released out into the internet. Once they are released, they can never be un-done. Even if they are taken down by a website, somebody has saved or downloaded your videos & photos.
If you go into porn, you can probably forget about eventually finding work in any kind of

, going into
high-profile politics, or working in a high-level position for a
major company or firm. Because once your "porn past" is discovered, you WILL be promptly fired. Unfortunately, that is the reality of the world we live in.
I don't want to be the person to rain on your parade, but before you seek work in the adult entertainment industry (porn) you should stop & carefully think about the repercussions it will have on the rest of your life.
Lastly, if you do wish to make your porn your permanent career, you should know that the pay is not stellar. With the internet and studios churning out new porn videos daily, the days of "gay porn superstars" are long gone. Almost all guys who work in porn supplement their income by working as bartenders & go-go dancers in gay bars, and many also work as male escorts, advertising on sites like "Rentboy". That's where they get the real money. You could say that some guys in porn use their porn work to promote themselves as male escorts, because that's where the real big bucks are.
Again, I think you should strongly reconsider whether going into porn is the best decision for you. Regardless of what you decide, best of luck to you.