Yes the cieling tiles upside down so the smooth side is up.. come in 2x4 sheets and can be taped together if needed. On small parts I put pins in the tile and use rubber bands acrsoss the parts to hold and apply pressure. For example its easy to hold leading edges to ribs. With the wing pinned down place a band around the LE and put a pin about 3-4 inches behind it. You can also select various strenght bands or just stretch for the pressure needed.