While I appreciate the comments, I want to reiterate what I said earlier. We're a LONG way away from looking for feedback on the art. Out of all things I've shown so far, the health bar has to be the most placeholder-y.
It's like complaining that the projectiles fired are just plain cylinders with a random texture

I mean, I know it, but there's a reason for it. They're just there temporarily to show functionality.