Hi Adam, thanks for your prompt answer!
I’m a bit confused as I tried to set my texture to flat already prior to my post, and then decided to check it again since you recommanded it. I made sure there wasn’t a stick texture tag, but the texture keeps on scaling when the plan shrinks. Maybe it has to do with how I made it shrink? (Changing the anchor point through the use of a null, then scaled it using S.X value in the coordinate tab?
But if I do an extrusion of a spline instead of having my primitive plan, it works as you said for the texture (ie: the image in the material). I had some problem making the the wrinkles again as I didn’t have enough subdivisions at first, but now it’s more or less back the way it supposed to be.
I still have a problem though: in one of my file, the wrinkles stay in place as well as the texture. (there is just the curtain reducing its size) but in the other, the wrinkles move (they have the same displacement space and projection type) I managed to make it work by recreating step by step the same material and now it acts the same way in both my simplified and normal file.
anyway, thanks a lot for answering that quick, even If it’s not really clear to me what I did wrong or right in the process of following your advices, it seems like there is some improvements!