Nothing is sewn. When I began covering it, I didn't realize it was going to create the crooked looking thing that you see at the bottom edge. Also, after having cut one or two realized I was doing it wrong and I was at a point where I couldn't fix those, and thats when the remaining cuts started getting done the way they were intended to. But even though it was performed the way I meant, it didn't turn out like I envisioned it.
Cutting out some of the foam might help since it wouldn't be poking out the way it is in a couple places but I'd also like to have something either in or over them. The only term I know to compare what I'm looking for to is a transition strip that you find in a floor between say hardwood and tile. But even that isn't going to really totally fix everything. Having so many sides really made it difficult for me, especially since I haven't ever tried anything like this.
But I know that something great will come of it, just gotta figure out what that's gonna be.