Apply the fresh thermal pads to the motherboard in the locations indicated:

Large square pads

Small square pads

Small Rectangular Pads

If you'd like to cut your own thermal pads, you'll need material about 2-2.5mm in thickness. Thanks to user howardsarah34 for the exact measurements for the thermal pads.

Two 3cm x 3cm Squares

Ten 1cm x 1cm Squares

Five 1.5cm x 0.5cm rectangles