I made this for my Grandaughters 4th birthday a few weeks back and only just got round to uploading.
Need to cut 4 of the castle walls and fold each one in half. Then stick each half against the opposite side of one of the other walls as in star cards. Before sticking the final 2 sides together, take a kebab skewer and slide on a drinking straw cut to the size of the middle arch and place in centre of castle, point to the bottom. now stick last 2 sides. You will need to put the castle turretts on either side of the towers. Slide on a few beads to decorate skewer and cut down to desired size. I used rag doll princesses to stick on the straw, but you could use decoupage or anything else you can think of. Once its dry the straw will spin round the skewer.
Then you can decorate the rest of the castle to suit.
GD loved it. Hope someone else can use it