How to round braid around a box corner

[SLH]

I am creating a leather paper tray.  I stamped the inner sides and bottom with a basket weave and hand stitched the sides together.  I’m now lacing the top edge with a round braid but can’t seem to get the corner right.  I know how to do a corner on a flat piece of leather but since the tray does not have a corner hole I can’t figure out how to lace the corner.  Help!

[Alisdair]

Perhaps use the loop that's visible on the inside of the corner as a "hole" to double up your cover over the corner.