Pretty good.

It was good and the video was smooth but try to make the character do something after he cuts the watermelon. Like, for instance, eat it? Or throw it at somebody? And another tip I would give you is that you should add something like a swish swish sound when he's slicing and then a slide whistle going up when he smiles. These are just my two cents.

Made me smile

For a first flahs movie, it isn't too bad. The story was really simple, but with a good animation, voices, and much more drama, it could get really funny.

Continu progressing and don't be shy to take a look to tutorial to get some advises.

good start

add some more colour and backrounds. and sound is essential if you have a rockband mike or similar they have pretty decent recording quality. and as for your character you should make something noticeable about him so that when people see him they can instantly identify him as Steve and not another stick figure. this was really good for a first flash attempt i liked the humour it made me laugh so you got that going for you now you just need to perfect the rest!!
looking foward to seeing more from you!