Okay. So, I wasn't having much luck trimming the acrylic frame with the scissors. So, I had an old plastic CD case laying around. Its just sturdy enough to support the phone. And left me with plenty of plastic to play with.
Ultimately, I ended up with a t-section piece and slightly folded the bottom. Then I bent the arms in, probably more for effect than support. The Gorilla Glue is drying kinda crudely. But, hey, hopefully it will work. Letting it dry over night. If it fails, hey, I'll scrape it off & try another approach.
Picture attached below.