Fast Music

[starwar]

i thought i should not lef the empty space at right bottom ;

[chemicalrubber]

The green hexagons are too striking, you might want to turn them down a bit, using a lower opacity or Soft Light. There's also a white fringe around the character, but you can use a soft eraser and erase that easily. Other than that it's fine, lighting and all.

[Epiph]

light source is too strong, white ridges around the render are a no-no, and this is generally LQ.

also, if those hexagons hadn't been there, this would have been horribly simple.