I making a Geno project, and I'm wondering what's your opinion about Geno here.

I'm going to be focusing on this task often, with the animations as smooth as(nearly) possible.

That's super cute!

Yeah, that's what I was thinking. Hard to find a way out of that though.Thanks none the less.

If you don't want them to be cute, I'd say upsizing them slightly would probably be a good idea. It gives you more leeway as far as proportion goes.

Good suggestion, but it will be much more time consuming and frustrating, even if it's just two pixels bigger. And I don't have a lot of time due to school. Ah well, I will try to find another way to make him less cute.
EDIT: I was thinking about making his head smaller/body bigger. Any thoughts/suggestions on that?

I understand that Geno is supposed to be a puppet, but I think his body language is too lifeless. If you broadened the shoulders it would likely look tougher. Also the mouth is up too high almost giving the impression of an pouty face, which is very child like.

I actually tried lowering his mouth, but it looked droopy and unlike Geno. I actually fixed it up a little, but he looks a little depressed, and still kinda cute.

any suggestions on that?

Reduce the Head/body ratio AKA Shrink the head and make the head bigger.

@Kiddragon: not sure if that's consistent with Geno's pre-made proportions. Edit: Yes, 1 or 2 pixel shrink would be in order

Right now the head is too far forward, making it look like he's pouting and reinforcing the cute factor.
As Ramsey said, proportions aren't helping, but I'm pretty sure you can fix those without completely reconstructing the sprite.
Depending on what this is for, you may want to avoid Selout. It starts to have strange effects when placed on a dark background.
Some shading on the bottom would be nice.

Good progress so far, eager to see more.

Up to some degree large head-small body is just his style.

Also 'shrink the head and make the head bigger'? Now that just sounds awefully ineffecient. Just imagine the stretch marks you could get from that. Yeowch.

I would still broaden his shoulders. I would also raise the hat so the eyes are more exposed, then see if lowering the mouth at that point is better.

Lemme make my typos in peace Damian.