Start on crimps in the roof. Make a move out the roof to rails and eventaully through easier climbing up the slab. Some unintuitive beta may help for the first move or two.
Don't cheat yourself and start with only one hand in the seam. I'm seeing far too many people start with one hand in the closer seam crimp and one down on the crimp down n left of it. Unless you're like 5'0" or shorter, there are 5'2"-3" people who can start correctly.