nice... good stuff...
The 3/4 view is wicked... a really good approach IMO... this stops the legs and arms from 'strobing' if done perfectly square on... particularly if you use the same arm/leg shapes as reference for each other... now - a couple of crits...
One thing I tend to do (regarding the head motion) is to twist the head ion the opposit direction to the shoulders... (which is opposite to what you've got here) so when the Right shoulder is forward, the face is fully revealed, and vice versa... tis looking good though regardless...
Another thing you need to do to make the walk sequence 'read' a little better is the EXTREME frame - that is the one where the legs are at their widest point... the toes on the leading foot need to point up... with the heel making contact with the floor... (I've a made a few edits with this mind) - another thing I noticed, and perhaps cos you had it 'limping' at one point, is that you've pushed the whole sequence up by 1 pixel so that the feet lost contact on the EXTREMES... now if you're doing a run, then fair enough... but this is a walk... and one thing a RUN does that a WALK doesn't is leave the floor... whilst walking at least 1 foot is always in contact with the gorund at any one point, BOTH are on the EXTREME keyframes.
And Finally... to add that stylish touch... you want to give the hair a little more 'loosness' (is that a word ?!?) - to do this, on the frames AFTER he drops down (his head bobs up and down) then keep the hair line high... and THEN drop it on the following frame - or the one after if you want it really floaty... this is what's called secondary movement... and can be applied to all sorts of things - like, scarfs, and capes and things that are LOOSE on the body... sword scabbards etc...
I've made a few edits myself here (my changes mainly in a VERY dark blue so you can see them if you pull it into your editing package) - It's not 100% correct but will give youi a guide to work from...
yours

my edit

All in all though... good stuff... keep on pushin!
Cheers
Pete
