4 Hours 4 Symmetry

Is that too long?

I've spent the whole morning trying to design a simple and quick heart block. None of them worked out until hour 3.5. The striped fabric had a LOT to do with my struggles. I think this is the one.

(P.S. I know there are already heart block patterns out there. I think I felt a desire to reinvent the wheel, but that feeling is gone now.)