You don't need double sided tape at the top and bottom with it cut so close it will just have to be held on by the sides. a little rubber on the edges could potentially cover most of that up too.
Edit - make sure you cut the acrylic big enough !
I looked at the photos and you'll need to precisely cut the acrylic long enough, otherwise you'll see the "air conditioned" openings.
My advice take it or leave it: Take your time!! Can't stress that enough!! Slow is good!!
I saw that and that's why the "precisely cut the acrylic long enough" this is so that it's snug fitting on the top and bottom.
This is why time and thought should have been taken to not cut as much off the panel as you did.
The "damage" is done and just adding another piece of flexible is not going to make it much better that's if you can cut it to the same edge which I say it'll be just about impossible to get it that good plus you'll see the crease. Just cut it correctly the first time even if it's a tad (and I mean a tad) too big you can file off the extra. This is not a "perfect" scenario to be in, but it is what it is.