Am I the only quilter who will take those 4"(?) wide strips and machine sew it first on the front, fold it over to the back, tuck in a quarter inch (more or less) and machine sew the back also?
I also often (if there is enough material) simply turn the back onto the front, tuck it under and sew. The thread color will match both the front and the back because it is the same color.
I know that the binding should be on the bias, but sometimes it doesn't happen. My quilts don't have to last forever, but I have had to replace a binding , (under MY life time fix-the-quilt policy).
I never worry about bias binding when doing wall art!