Looks great Barb. No one is ever going to notice the gap in the back. Your splines look great too. Once you get some finish on it, it’ll all blend together nicely.
As for the base, if you oversize it a bit, consider leaving the back side flush to the flag case. Otherwise it ends up with a large open gap between the case and the wall when you set it on a table or in a cabinet. A little detail router work on the sides and leading edge of the base make for a nice contrast as well.
Not that I’d think you’d go this way, but I saw a beautiful case once, made of walnut, with an ogee cut along the oversized base. The ogee was painted black and gave a very stylish accent to the whole thing. I’m not usually a paint & clear finish kind of guy, but that one looked really nice.
Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".