The original gryphons are much closer to the rest of the panel in terms of depth in the default UI. Your gargoyles look like they're coming out of the screen, almost giving me a sense of vertigo.
As zorker suggested in post #14; try adding an outer shadow. It may go a long way to help reduce this. It will also make it look less cut-and-paste onto the game world.
Obviously. My point was more that it being lion faces out of all things, seemed pretty random. Perhaps you could follow the path of the default UI, and instead of having a flying gryphon for action button background, you could have gargoyles.
Yes, and you asked for 'ideas' in your OP, which I took as asking for pointers.