What was your source for this quilting project? Online Photo or Website Name of website or photo Flip Flop Blocks Link to website or photo quiltersobsession.com/flip-flop-block-original-p-647.html What are you most proud of? That the machine quilting I decided to do fits with the totally wonky visual of the flip flop blocks. What advice would you give someone starting this project? Be careful when you make your rows that the blocks alternate on the concave and convex to create the wavy flow. And then be certain when you sew the rows together that the wavy flow runs vertically as well. It is all too easy to flip the block and not notice!