Here’s a plan to help you build the Ace mini foam wing. Feel free to shrink or stretch the span to suit your purposes.
Ace RC used to produce foam wings which were used in a wide variety of plans published in magazines. The idea was to build a cheap, easy plane without having to cut out ribs. Quite a few of these planes became very popular. Unfortunately the foam wings are no longer available, but you can still build these popular airplanes with a set of balsa ribs to make a wing with the same outline.
Leading edge is 3/16″ balsa. Spars are 3/16 x 3/16 square.
If you prefer a wing with ailerons you can build the wing as shown and add flat 1/8 sheet ailerons. Or you can trim the tails of the ribs, add a balsa trailing edge stick, and add a tapered aileron to replace the part you cut off.