Whats this then? My first tattoo design

My cousin has asked that I design some tattoos for him so this is the first of three.
Remit:
A realistic eye with a rainbow iris
A red and blue galaxy (hence the 'Eye in the Sky') I might have taken a few liberties with the galaxy stylising, but we'll see
Materials this time:
2/3 of an A4 sheet of bristol
Graphite (mainly 8B mars lumo)
FC Polychromos CP's
Eraser/BluTack
Time: About 6-7 hours
No refs to credit.
Note 1: The pink in the swirl areas are actually red, my scanner is doing it's thing again
Note 2: Coloured pencil on bristol board is a bad idea

Thank you for having a look
Paula

EDIT: It's been done, Eye in the Sky in the flesh


Thanks Leon, I hope everything is going well.
Paula