I'm not saying that i'm the best spell maker, but i think it's pretty clear that you're fairly new to this. I'd suggest you experiment with world editor for a little while before submitting another spell.
Well kinda buggy...you don't have to stand for making the spell work, 20 seconds for deleating a effect is to much to not use variables, not very eyecandy...if i make a small spell I always add nic effects to make it look good.
I don't think that you efforted more then 2 min in this spell.