Thanks for your interest. A lot of online bullies flip when I reject their art. We accept only art work that would be about right for book or computer game covers so yes we do reject 90% of submissions.
Honestly if you want to succeed in life be prepared to fail, a lot, and dust yourself off to try again.
Thanks for your interest but due to online bullies I might be shutting this site down soon.
You'd be surprised how men turn into hostile children when their art gets rejected. I'm not making this up.