Rough animation- Baby and Butterfly

Here is a very crude (I repeat: VERY crude) rough animation I've been working on. The basic premise is that it's a baby chasing a butterfly. Simple enough. I'm looking for an avenue to subvert it later, although I'll probably express that through storyboarding rather than animation. Well, maybe eventually.

Looking up reference material for this was fun. Just looking at videos of babies and butterflies. More to come later, particularly in finishing the action, and adding detail, expression, and of course the butterfly.
I'd like to ideally make this at least a 15 second animation.

I made this on a macbook app called AnimationDesk. It's pretty much a steal at $6.99 but some of the controls are weird and it crashed upwards of 6 times just tonight alone. It's nice because it's on the iPad, too, and it's pretty simple to use. But I'm just excited to install my Flash cs6 soon.

Here's a "model sheet" (I use quotations because honestly, I'm really just learning how to stay on-model) that I made for the baby character. Ideally, I'll get him to look something like this as I edit the animation. As far as character design goes, I think he's got some interesting shapes and a lot of potential for emotion, but I need to work a bit more on creating defining characteristics. Ah, well. It's my first time, I guess.

Also! I'm sorry my sketch photos are the absolute WORST quality. It's like 4 am, so I just grabbed the nearest paper and used my iphone as a camera. It was grainy and green-colored charcoal paper, so I didn't really think that one through.  It was that or lined paper, and you gotta make do when inspiration strikes!

PS I have an astronomy midterm tomorrow WHAT am I doing working on this at 4 AM. PRIORITIES.