I see a lot of progress in your speedies work. The colors remind me of Tom Scholes' work. Although I have to say that some structures feel flat - the overal shape is there but they sometimes lack volume and mass. I'd love to see this technique being applied to hard surfaces such as jet fighters or even characters. Leaving little to change and more to pre-planned work.
There is a use of colors here that I haven't seen anywhere else. I love how it's almost as if you're viewing it through 3D glasses, the colors are threatening to separate. Like it's some dream of flashback of a past event. Aweome awesome!
very dreamlike, very tom scholes be careful not to copy his techniques completely - you want to be recognised for your own art and style, not someone elses, but its a good learning method! Also for the 2nd one you moved the colour channel too much (theres a red strip down the right side xD) post some more mate!