You should do a slight shift in the head every so many frames by maybe a shift of one pixel width over, so it looks like his head is not a static image.

otherwise it looks good.

Yeah just like that although I think you should outline the hand with either a gray or light blue.

It this your first piece ??
Congratulations. We'd probably love to hear about your artistic background

About the piece itself, I think the white outline is jaggy, it deserves anti aliasing or a trip to the recycle bin.
The main problem I think is that the character seems to be sitting on an invisible chair and that he's going to collapse in a moment.
Also, light blue colors inside the pants don't make much sense to me, I think it should be dark all the way and that legs should partly be in the shadow cast by the pants.
Face probably needs work too but I'm not too good on that so I'll just pass.

Otherwise, good work, especially if it's your first (hardly believable actually ).

Oh and welcome to Pixelation.

In regards to your critique, Your are absolutely right the issues you address are are things I find dissatisfied with, I like the white / black outline it makes it look like a sticker and really stands out but it is far to jaggy I wonder if I use the grey on the white jaggs that maybe it will help.

The stance was supposed to look like he is a. in a skateboard stance, or be standing on a subway in other wards knees bent and leaning forward.

The shorts are white with blue highlights because I thought the best way to shadow white fabric is tan or blue and with so much browns already I though blue would nicely offset the use of browns.

if you have any ideas of corrective measures please share them with me I would like ideas on how to fix this piece in order to make it more presentable.

all works are works in progress until death.

I believe this is sorta what he meant, it is very rough, but should give you a idea.

When working with white clothe light blue makes a good shadowing and outlining color.
also replacing a black outline with varying shades of color will allow you to give more definition to your art.

It is coming along great, the trunk looks incredible, has some great detail but it may need some more highlighting and shadowing to give it more depth or a feeling of roundness, the cap has great contrast on the other hand.

I cant wait to see the finished product.