httpv://www.youtube.com/watch?v=hY-Qd3fxUOM
This is a great tutorial video by LegoBoyProductions on how to make Custom Minifigures using A4 Inkjet Water Slide Decal Paper. I know some of you just use printer labels, but to get a great finish Water Slide Paper is great and not that much more expensive.
The video shows you where to source the minifigure decals from, how to customise them, what supplies your will need, how to prep your minifigure, and then stick the decal onto the minifigure.
A4 Inkjet Water Slide Decal Paper can be bought online at Amazon UK and Ebay UK and in the USA at DecalPaper.com