What you have to do in step 14 is to give volume to the edges of the model. You need to make its edges into T shaped edges Well the T has to be tilted to one side, something like !- body -!
Just follow the already exsisting creases. There is a valley fold, fold that over, then fold along the mountain fold.
I folded this model a cupple of times, but I don't have a camera right now
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