Second box:

Line 1: Soak in warm water for 3 seconds. Remove decal using a pin set.
Line 2: Slide the decal onto the backing and wait, then stick according to the table
Line 3: Use a cotton bud to press on the decal and remove the air bubbles. Don't touch it until it dries up.

Box 3:

Line 1: Use a cleaning agent to wipe the parts which the decals are to be pasted on in advance to remove the excess oil.
Line 2: Prepare your tools in advance (scissors, pin set, cotton bud).
Line 3: Feel free to apply the extra decals as you prefer.

Well, might not be 100% but it's somewhere there.