For a first attempt this is really quite decent. A few tips though: Try to ramp your frame rate up to 15 FPS you'll get a lot smother animation, however don't jump into it all at once, as  you  begin to feel comfortable at 10 fps, try 12, then finally, 15. (You already have a good start, I started this method at 4 fps.)  Another minor problem, is that you had a little bit of light flicker.  The easiest way to fix this is to animate in a dark room with artificial light, however if you don't have a basement or anything that's consistently dark try animating in a box. (This is my preferred method.) You mentioned securing the base, you seem to have a good handle on that. Finally, Animation takes practice, LOTS of practice. As you seem to have a good head start I'm sure it will come easier for you than it did for me.  Overall, not a bad start at all. I look forward to seeing more from you in the future.

Well that was really good, except for one part. It looked as if he was gliding, or running. And I know why it looks that way.  Take a look at this snap shot I took:   he's skipping a stud. That's what you do for running. Don't skip a stud:  (frame from NXTmaniac's Tutorial) Once you fix that, your walking animation should be all set.
- Mason