how do i fold heads like that? i really want to do this one but i keep fucking up the head

I hate these things, but try closing the head on the lateral, then place the spiky flaps inside the head so they dont get stuck. Put glue on the bottom of the top of the head and with a pencil attach the rectangle flaps, if the spiky flags poke trhu corners you can push them in with a needle set them in place and from the inside with that very same needle glue it. The bottom of the head is similar, i got tired of fucking this up and just made a pear teto you should do that instead.