Start just right of the tree, as with Face and Crack, or even stand on the trunk. Hop on the balancy start using a couple of crimpers. Move up and to the right via a sequence of tight hand and foot moves until you get your fingers wedged into the nice horizontal crack. Aggressively work the crack up to the committed topout on the top right.
West face of Carousel Rock, from north to south. Start at the tree.