/cgl/ - Cosplay & EGL

What should I do about Aya's shoes?
Pic related is the closest I found, but she actually wears something like red mary janes, but with the same one toed geta platforms.
From what I've researched they are not all that hard to keep balance in, as long as you stay in motion (which is kind of fitting for her, now that I think about it), so I'd like to go for accuracy and build some.

How would I go about doing that?
Just plaster two pieces of wood to the shoe soles?
Should I put a strip of rubber on the bottom? I'm not sure if that would make it easier or harder to walk...
Is it a good idea to make them slightly oval, so that the profile still looks thin, but the surface area is bigger? Or would that make it easier to trip sideways.

In any case, I'll bring a pair of backupshoes.