Cosplay Help?! [Twi'lek, Star Wars]

WHY HELLO FELLOW MIBBIANS!

I need some help!
I don't know how many of you cosplay or are complete Star Wars geeks like me but, I need advice on how to cosplay as a Twi'lek!

If you don't know what a Twi'lek is, here's a picture!

http://wayneandwax.com/wp/images/Twilek_NEGAS.jpg

Well a link to a picture, because I am not on a proper computer at the moment X3

Sooo!
I have no idea how I'm gonna paint myself blue without looking tacky and gross...
Help... Any one?
I thought about like, airbrushing with some blue paint, but I'm not sure how to get my hands on one D:

Tee hee, the thought of me with a light saber is dangerous... I can barely walk over a flat surface without finding something to fall over.
I'd probably thunk myself in the face with it while trying to act all cool and graceful, knowing my level of co-ordination :D

Yes, so the Lekku (head tentacles thingy) any suggestions on how to make them...?

Anything else that may help me, just comment, I'll love you forever for it :D<3

<3 Lu-Lu