The overlaps beween the blue and yellow will be a 1/8 piece of white trim tape. That hides the overlap nicely. I am so very happy with the iron setup. Dave suggested using a sock. Its very thick and allows you to press down on the wing as hard as you want with no marking or scratching.

The work board is very simple and makes the covering job easier. Just using some cardboard to protect the work surface with a couple of good straight edges allows nice cuts and lots of room to work.