I'd tell you to do a search, but I have just tried for something I'm posting about, I know its in the forum somewher cos I have read it before, but gone back and can't find it so.....
bonnet badge is on with pins, boot badges are on with pins(and they cut your fingers to shreds, they are seriously sharp), wing hp badges are on with tacky glue, make sure you don't make a mess of your paint!