im a brushless designer mostly. Been making GFX all told, for about 3 or 4 weeks. 2 weeks with cs2 the other was with gimp, lol. these were all done within the last couple days.
Its not really my style... I like to have my own thing.. I think more times then not, I can make em look decent with my style... ill try and branch out once I get good..
Your biggest weakness is text like most people. Just keep working with that until you find something you like and ask text experts for advice. How long have you had photoshop?
Not bad I see potential though. You need to make your renders pop out more and the text is a problem but thats usual for some sigs so don't worry. Don't always try the fancy font.