I need help with a model from the book "Origami Creature" by Zhen Ming Huang. Anyone familiar with this interesting book?

I tried to fold the butterly but I got stuck at fold nr. 36. One flap should end up in two flaps (antenna) and I'm pretty sure that the crease pattern for that step isn't correct...probably the mountain and valley fold lines are not possible to fold as shown...
Hope somebody can help me

Kind regards
Alan