I like it, as well. And I like that you made it. Were I you, wishing for one-hand operation, I might consider cutting the straps at the edge of the flap. Back the ends up 2 holes on the pins and attach to the face of the sporran. Run Velcro across between them, on the face and flap, and presto, one hand function.

Or not. You would need to be attentive of aligning straps upon closure.