We can't easily "draw" on this platform. But I think what the question is looking for is to show a diagram indicating how the various receptor subtypes might transduce the signal. So you might want to show a drawing of the NMDA receptor along with a site for glycine, opening an ion channel. You would also want to show an AMPA receptor that does not require an allosteric effector. As far as spine formation, I'm afraid I can't offer any suggestions as to a diagram. Good luck.