Two new sigs

Hi everyone i just started graphic design a few weeks ago and have basically just been doing tutorials.
These are my first two signatures were i tried to combine things I've learned from the tutorials.
Any advice would be appreciated,

Thanks.

http://i515.photobucket.com/albums/t...endricksig.jpg

http://i515.photobucket.com/albums/t...eadmau5sig.jpg

needs a light source and has no contrast . but nice start , also needs to work on blending more .

Thanks for the reply, I'll try and focus some more on those on my next try.

i agree... u need to light up ur dark world.. hehe kidding... i love its composition... but try to blend ur render to the background to make it more attractive... kiu

I like the last tag but its crying out for some coloured lighting.