Seimitsu buttons

sorry for this stupid question but how do i put artwork inside the semitsu translucent buttons? http://lizardlick.com/images/for_sale/pushbuttons/ps14kn_w.jpg

i dont have any of these but how hard is it to get artwork inside of one? and can you do a step by step thing for me?

Thanks,
James

Here you go bud.

i cant believe i didnt find that when i searched…

thanks man.

np bro