Soldering and graphic mount help


ok, so i finally got my soldering iron and plexi glass.

im thinking about useing my FS3 and taking out the iron face plate and putting in new pushbuttons throw the plexi (sp?) glass. how would i go about putting a graphic under that plexi glass?

also for the soldering… im using a logitech precision pad as a pcb.

when i take the pcb out do i just solder the wires from the pushbuttons onto the spots where the old buttons where at?