There's a few ways to do it.Since you're laying down candy I think I'd spray the base for the candy first,then tape it off and put down the pink (it isn't candy too right?),then unmask and tape off the pink to candy the rest.You can shoot the pink first but then when you base and candy the rest you'll end up with a pretty serious edge,where the first way you're edge will be minimal and won't take so much clear to lose the edge if you're going to sand and buff it flat.Now, if the pink will be candy you'll have to base the whole car,mask off for the first color then untape and tape the first color off at that line to lay down the second.Any overspray or mistapes when 2toning with candy will be locked in under the candy and be visible.