Shrinking? Do you mean desiccation? Do the leaves have a dull look to the color? This does not sound good. Did it look healthy when you unpacked it? Did you soak the roots in water before planting? For future reference, with some exceptions, most *seedlings* will become toast in full sun. Shade cloth is handy for protecting seedlings.

I'm not sure if it's dry enough to say desiccation, but I'm not sure. The leaves look about the same color, maybe a little browner, but it looked pretty healthy when I got it yesterday. I didn't soak the root (it only had one) before planting, but I watered thoroughly. It's probably very young (it has a very thick, one inch leaf that's doing fine, and a kind of big, growing leaf that looks bad). I'll get a pic tomorrow, as it's dark at the moment.

Sounds like sun burn to me.

Here's a picture, the leaf on the left is really thick, so It's not shrinking, but the emerging one on the right is worrying me. I have sticks under it because it can't support itself.

{{gwi:1136709}}

Please somebody? I really don't know what to do

Get it into some shade. I'd say an east- facing window/exposure would be good enough for now. As you probably know, these need high humidity. you should mist it pretty often.