Alot of these look unfinished but they are fantastic starts. Lot's of potential here, just don't be scared to try new stuff. Some of it will look <Censored>, but most of it will look good. You look like you play it pretty safe. Go all out man.
Not sure on the lighting in the first one, or the text. It's a bit big as well for my liking.
I do like the second one though. Nice and simple, but still looks nice. Maybe needs a good light source.