I was wondering if sleeping with them beneath my head UNDER the bed was okay? I don't want them to bend or get lost. I'm just wondering if it would have the same affect if they were under the bed and not right under the pillow. I've been doing this for a while, since I'm brand new to this and I have been trying to keep the cards on me every where I go so I can feel more tuned-in to them.
I see that you're new here. I am, too! So welcome to AT and hopefully this isn't just the blind leading the blind, but I'm going to throw in my two cents. It really shouldn't matter where you put your cards, as long as you're doing so with intent. This seems to be true from both the religious/occult/new age/superstitious/*insert other words of this sort* perspective and the psychological perspective.
I'm not going to speak on the first perspective because there are many people who could articulate that position much better than I, but I will speak to the psychological aspect of placing cards under your pillow at night. I'm currently a college student perusing a double major in business, and to do so I have to take psychology classes. In my psych class we discussed quite thoroughly about the idea of "sleeping" on an idea, and while psychologists initially thought that sleeping would cause you to lose the material you had just learned, recent studies are showing that students who study and then sleep retain information better than those who do not.
So looking at your cards and contemplating their meanings before you place them under your pillow (or your bed in this case) before you go to bed could help you retain that information. If you're curious about more info on the psychological aspect, you can post a response here if it has to do with Tarot, and if it doesn't PM me and I'll try to answer any other questions you have.
Hope this wasn't too long or boring for anyone to get through, but for me this is fascinating stuff!
--Gibby