the front most creature looks better in the first shot i think.
In the second it looks like it's about to collapse
also in the first one, it doesn't look like the feet should be able to reach that high, it looks more like the feet would never leave a meter or two off the ground on a creature that big
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D