UI bar much wider

[1asdfasdf1]

I'd like to make 3 changes to the DuxaUI (or any UI).

1. Target health to be a large red bar (3x as wide, 2x as tall)
2. My health and mana bars to be wider and taller
3. Expand the single-pixel flashing "you have auto-attack turned on" rectangle to be bigger somewhere

Any tips? Modifying EQUI_TargetWindow.xml is not getting me the results I would hope.