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ye so indeed it wasn't so great, but in my opinion age does make a difference, your young and you have not a lot of experience in flash or animating. But that's no reason to be so harsh. First of all you should maybe practice the basic movements of ur characters more, and just focus urself on one paricular character, so just draw one (even a stick figure is just fine) and have fun with that one and make him do different things that way you'll get more the hang of flash. You can add music and backgrounds later. btw there are some gr8 tutorials here on NG, however as ull get better (i'm sure u will if u just keep practicing :) you'll find that it's necessary to "redraw the same god damn stick figure" if u want ur characters to make certain movements look decent.
anyhoo don't give up and just keep trying ;)