take fun foam, make your pattern for the crocs, trace it onto the fun foam and then cut it out. fit it over the feet to make sure it’s roughly the right size
take a low heat source then (I used a tealight candle because these are so small) and heat the foam pieces (one at a time) just enough so that it’s maleable but not going to melt or catch on fire
shape the foam until you have the upper foot/toe shape, then fill in the sides of the crocs with the same technique, glue them together, then make the bottom the same way. paint them and then cover them with a glue-sealant (mod podge is fine), paint them again, then seal them again (matte works best for keeping the same texture as the rubber crocs)
once done, cut out one more piece (a smal strip) for the .. ugly ass.. sandal.. handle.. part. what is that thing anyay??
paint it (both sides) and seal it. it doesn’t have to be shaped. for a working pair of crocs you’ll need to hinge it (using thread would work) and then hide your thread/replicate the croc button/seal with a drop of resin.. let that dry, etc. for a non-working pair (like this doll’s, I would have made them work if i’d had time to mess with it) just glue it down with super glue in any position you like
oh one step I forgot:
before painting, you’ll want to punch the holes
take an upholstery needle (girth of your choice) and heat it with your flame (don’t burn yourself, and the needle will get hot so don’t hold it bare-fleshed). once it’s very hot, poke the holes into the top of the shoe… then again for the side with the oblong holes.
THEN seal and paint it.
re-voila, tiny crocs!