Sketches Dump #Something

Some of these are old sketches I've had around, but most were done today while I was playing with the settings on my tablet. I spent the whole day re-programming it to speed up my workflow and it works wonderfully now! Not that it didn't work well before, but I've managed to cut time in a lot of areas thanks to the fact that my tablet has almost 30 customizable buttons.

Anywho, tell me what you think guys! I had a lot of fun with some of these.

As for the bottom section, that was probably my favorite thing to work on. I've been playing with it off and on for about three days. I've been re-watching all the Ice Age movies on TV (Except for the first one, which they haven't shown! It's very sad...) and I saw the new one the other day. I keep hoping they'll bring the movies full circle and bring the baby from the first one back in somehow but nooooooooooo, they don't use that awesome possible plot point, they just throw in random pirates and braveheart chipmunks.
Anyways. I decided to play with the idea of what the three main guys (Manny, Diego and Sid) would look like as humans. It was a super fun expiriment, and I'm pretty happy with it. I'm probably happiest with Diego. I'd really appreciate some feedback on these last three most of all!

All feedback is welcome!