Practise is the key. Tell your friend that. Do you use a tablet, or a mouse to draw them?
Aside from that, I'm not sure about the tactics for this flash - the drawing quality is poor (obviously) and you have shown that you've got more talent than this (not difficult), by drawing the outlines. I'd try and get something proper together, just to prove that you can really get the job done.
I was so dumb struck, I couldn't even bring myself to watch the remainder of the flash itself - I watched the Cow and Rabbit, but reasoned that they wouldn't get any better.
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