This isn't bad. I see you've been looking at things like star wars and lowest common denominator anime. If you want to grow as an artist I would suggest careful study of Art Nouveau Art, the Symbolists, and the Pre-Raphaelites. You might want to have a look through Jugend, a popular art magazine that began publication in 1890s. You can find scans of the whole run on-line and it may well come as a revelation to you.