Two choices. One is to use the paper piecing method in which the entire block is done on a single foundation, even if there are seams. Books are available for this, have seen them. Sometimes called flip-flop paper piecing. You use translucent paper for this technique. This would be nice for this block because otherwise you have four foundations.
1. The strip across the top
2. The rectangle in the lower left corner.
3. The lower right hand side, split into two foundations,