new to painting, help please

[zerojs]

Hi, ive just recently started to try my hand at concept painting, using photoshop and a wacom bambo.

These are two ive started recently, any feedback , crits please?
Here are the fullsize versions:
http://www.zer0pages.co.uk/conceptlava.jpg
http://www.zer0pages.co.uk/conceptmars.jpg

[DeAtH_SmiLeS]

These are looking pretty good man. My only crit would be to add a bit more lighting and shadows and really define your work. Keep it up looking good!!

[zerojs]

thanks man, yeah i really need to tighten stuff up and define details more.. thats what im struggling with right now i guess.

[Alexson]

Hey those environments are pretty sweet man! You should play around with a bunch of different brushes with different settings until you find some that you like for ground textures and whatnot. keep it up!