Your animation displays full screen: not the best option... Besides, the host you use is a hassle to users.
Look in the PJ gallery header, links / tutorials, you'll probably find the information you need. You can also use the forum search engine, I'm sure the question has been asked countless times.
I'm not using free pixelling software, so I can't answer directly!

This belongs in WIPs, not Resourced. ^_^

Nice work so far. A couple suggestions:
1- It's really hard to tell, so it hardly matters, but make sure that when his left arm is forward his right leg is forward, and when his right arm is forward his left leg is forward (in other words, don't swing arm and leg of the same side together). I'm confused as to which leg is which in most frames. Frames 2 and 8 seem to both have the right leg straight, which can't be right. One strategy would be to make the far leg darker or less saturated. This depends on your light source, though, which also is a little ambiguous.
2 - the animation itself is pretty smooth! I do think his hat should flop slightly, and the the feather should wave. Make sure the reaction happens AFTER the cause (so the frame after a foot strikes the ground, the hat should show a reaction to that jarring).