Please critique this sprite's walk.

[Scisen]

Hello, this is a sprite I've been working on for a long time. I only get maybe 30 minutes every couple weeks spare time to work on him, so it's been a very slow process. I think I'm about done with his walking now and just want to get some critique and see where I can make final touches before I move on the running, jumping, and idle animations.

Here's the non-animated standing sprite:



And here he is walking.

[Olothontor]

Hmm. It seems a bit abrupt, perhaps add frames inbetween to make it run more smoothly.

Other than that detail, it's great!

[Scisen]

Hmm. It seems a bit abrupt, perhaps add frames inbetween to make it run more smoothly.

Other than that detail, it's great!

I'd like to keep frames down to the most possible minimum for all animations.. combined it could save some precious resources in the game.

Are there maybe some subpixeling techniques to make the walk smoother without having to add frames?