Lovely! I'd personally use less dithering, but it's great.

Carries a lot of expression, which is great.

Maybe he thinks he's a monkey sitting in a tree.

Never heard of Yage tea; does it look like it?

Aha -- just did a little bit of research and now I get it :P

Ouch, my head :D Good style ;)

Is that Yage tea?

Welcome to PJ!

I think it's pretty good for your first pixelart! Good choice to pick very few colors to start. Your anti aliasing is not bad, but could be imroved. Keep it up!