nice m8i keep up the good work, i like the very bottom 1, i know its very plain but its nice :).
if i had to give you some advice i would say you need to work on your text, also need to work and your lighting and blending as there isnt a main focus point and they are quite dark. i think you have a great potiential from the look of these just keep practicing :).
try dafont.com for some fonts as it a great site :) | 
