What are some good ways to make a fort?

Yes this is an interesting question but I have been saying in my last few questions that I would make a pillow fort for my next sleepover or play date or whatever. So how can I make one? Like directions for where to put the sheets and everything. And maybe we could make the flooring with pillows or something like that. My bro has two twin beds on the left of the wall about 6 feet away from the door where you first come in. and the beds are about 3 feet away from each other so that may give you an idea of how to direct the sheets and stuff. And I know this has nothing to do with the fort but how can i get my splits down fast. I want to show off (not in a bad way because everyone thats coming to my sleepover has their splits down) at my sleepover with the pillow fort. So please answer both of my questions! Thaaank ya!!