not bad for practice
pick up a book called character animation crash course, draw everything in it 3 times. your animation will improve if you do
Well, good for a start.
Okay, so you can animate. Now animate something more worth watching. :-)
As for the preloader image, don't sweat it. There are of course those who will blast you almost no matter what you do, but by and large, sane people won't be too concerned with that sort of thing so long as you're not trying to make it look like your own work - as long as you give credit where credit is due, most folks are okay with letting you "borrow" their stuff, though if you are able to ask them for permission in advance, you'd be making friends if you did so. :-)
Yes I know haha I'm working on a project right now. This was just for feedback.
And that's what I was guessing lol but I just wanted to play it safe. :P