I've made some progress. My 9-patch blocks are re-cut and placed on my design wall. I tampered with two layouts. The first layout is placed with some space between 4-patch collections, so I can visualize a narrow sashing to tie them all together.
This second layout has staggered the colors in a vertical angle, like a staircase. I think I like this one since it will be going to a child.
Now on to Phase 3. May you have a blessed Happy Day!