Its good for your first.Here are some of mine.
The handle is good, but the notches on the blade look a bit too exaggerated.
I'd agree, maybe make a serrated blade, with the notches closer?
Eh it is way too wiggly looking
It's not meant to be a down-to-earth kind of knife. It's supposed to be a knife you swing on glowy platforms with, with a grapple rope and jump down on your enemies to stab them