Really ,very good.
I have used photoshop, but i cant do so good like you.
our face was very good
I don't know how to move in the 3d it would like a lot but I don't know
you this of congratulations
really good! ;> I like the first one most. keep working it.
Keep up the work your doing good... Here's a few good tutorial sites(most on Cinema4D) to help you along the way... c4dcafe.com, c4dportal.com, pixel2life.com, 3dattack.net, cineversity.com, c4dzone.com... Hope these help ya
about the signature: render isnt blended very good in the background
about 3d work: apply some materials and lighting i'd say :] (for now it looks good though)