How to stack pillows when humping?

So to get off, i hump pillow. usually i use the foot rest from our couch and then pile 2 couch pillows on it, and a regular pillow on top. but i want to hump in my bed now using my pillows. i have 4 of them, and i can never get it placed good enough to where im comfortable and it feels good. so how can i stack my pillow right? no immature answers please..only answer if you currently hump pillows, or know about it. thanks