Being critical

This is what I've been working on this weekend. I'm applying the techniques I used in the last portrait study and I like it so far but I still have a problem comparing my style to others and liking theirs better. Some of my favorite comic book artists are Marko Djurdjevic, Jo Chen and Alex Ross of course. The first two seem to have more texture whereas everything I do tends to be smooth which is a little bit more like Alex Ross. However, Alex does his with gouache which I think takes greater skill than my digital work. I guess the way I'm doing it now lends itself to that look. Anyway, I'm hoping I can get to the same skill level as the professionals which is where I need to be to get the work I want. (I try to aim high :))