Now about your scratch sprites...
From them, I can see you're not bad at drawing with hands..
Well, I can draw with hands well too :3 (and now I'm gonna show off: http://www.pokecommunity.com/showthread.php?t=204155)
If u clicked into the link above, don't post anything. If u do, you'll close my thread as it is over a month old (done those pieces last year...) -_-'l"
Back to the topic.
It's ur first 2 scratches right?
About the first one, you might want to use the curve tool a little more on its body. The sprite looks really flat :\ And is it supposed to be a snake or a ghost?
Look at this piece of art I drew. Well, forget all about the dithering as it is not used a sprite :P
You can see pretty well that the light comes from the front. And in order to make a sprite 'unflat', you'll need to add some necessary shades.
You may want to visit my pixel art thread for more examples: http://www.pokecommunity.com/showthread.php?t=226053
Same thing goes to your second sprite.
The above isn't meant to be harsh. It's only a critique, so don't take it too seriously ^^