The file 'Skull For Nerf Dart Hopper 3D Printer Model' is (stl) file type, size is 1.4MB.
So it turns out that the reason this design looks kinda bland is because there are no graphics so here is one option it is just a adjusted and cut version of the hell skull by sculptor (I do not have the skills to make this)
Skull.stl | 2.9MB |