Standing unicorn with large head and twisted horn.
Step 31: the repeat should be from step 26 to 30, not 20-25.
Step 40-41: this is a double inside reverse fold. See this image taken from above.
Step 42-43: it helps to unfold the head partially to make these folds.
Paper & size
When folded from a 35cm square, the model ends up about 19cm long and 13cm in height.