This is a HUD and hp bar editor and is currently available for FORGE/FABRIC

As you can see it in the pictures, you can create some new things for your HUD like:
- adding the player head to the screen
- creating a circle or square frame, second frame and background as a "head holder"
- creating a health bar (frame, hp, bg, second frame)
- changing the size, position, color, opacity for most of these elements

Health bars can be made for mobs too.
You can create the hp bars for passive, neutral and hostile mobs separately.

You can choose from:
- 33 health bar frame type (You can use 2 frame type at the same time)
- 11 health bar background
- 11 health indicator bar
- 30 head holder frame type (You can use 2 frame type at the same time)
- 24 head holder background

These are all colorable, positionable, scalable and can be turned on or off.
Opacity can not be changed for mob hp bars, but you can turn every single element on or off if you want.

You can open the settings window for these with the "B" keyboard key by default.

Health Bar Plus