What more can I learn to move on ? I know how to use the pen tool to cut photo's, & vexel art is dead...period !. What more can I learn the requires the use of the mighty mouse ? for art.
What exactly are you trying to improve in? Just creating sigs or are you trying to get into different forms of "real" art?
Well just find something that you're interested in and do research on it. Also try looking up things that you wouldn't look up normally. You'd be surprised how much knowledge in one topic can help in a completely different one. btw...if you like style of art, continue to do it. Don't worry about what other people are doing and just get better at what you like.