Starting on the right side of the Tree Slab, use the lower rail of holds and move left with pretty good feet. The crux is near the end when you must reach left to the arete and mantle both hands on either side of the arete on a good set of holds. This can be reachy for shorter people. Fun inf on the Tree Slab already.
A pad can helpful but not necessary as feet never get more than a few feet up.