This month there is a tic tac toe at Challenge Yourself.
In my case I've gone across the middle row and used buttons and washi tapes.
There is some shadowing on my scan, but no matter how hard I pushed on the lid of the scanner, it still showed through.
I've used 4 different washi tapes, plus 3 yellow buttons as required.
I also used a transparency bicycle from my November kit "St Tropez" and 2 wood veneer daisies featuring darker yellow/tan buttons to match those on the yellow washi tape.