Well, there isn't a whole lot going on. The arm's movement looks smooth.

Well the text looks good enough, nothing too bland nor too flashy.
And it shows that this is a beginners work(though you do seem to have some potential).
The beard should have a better transition to his face, at the moment it looks like a fake beard. But going on on this idea you might want to make the beard fall off during the intro instead of him flipping the bird.
Also due to the mouth movement(no teeth?) I guess you are going to add some insult to his gesture. But again with the beard falling off idea: After falling off he could utter a resignated sigh, connecting to your logo(average means on a big website like this not the highest quality standards).
Because you see swearing characters a lot it wouldn't seem to interesting, but a logo should be used to distinguish yourself from the rest and to spark interest in the audience before actually watching anything(for example greasymoose or MasterAardvark, these logos look interesting enough that one might want to see their animations).

I don't know in which direction your work will go, but depending on that you should choose a tune playing during the intro fitting to your work(light tune for funny stuff, orchestral music for stories, you get the picture).
His mouth seems a bit off, like a constant duckface. i don't know, it just doesn't seem to belong there.

And another idea I just got but might be a bit too much for a beginner: Connecting to your logo once again the guy could transform into Hulk(green Hulk-green logo, wow...) and smash the logo in one blow, hyping one's expectations. But beside the difficulties behind animating this: If you are going for a more serious tone in your work that might seem a bit off.
Hope I could a bit, Hope to see something from you soon!

not sure if no preload, or just not working

Nice colouring, & drawing seems nice. Wish you could do some more scenes, 'cause its hard to vote when there's only a loop ;)