I agree with on-point. I like the mixture of light and dark corners, but prefer the light one if you want them all the same.
By comparing to your pins, it looks like this is quite small! For quilting, I would SITD around the triangles to make them pop. Not sure you need anything in the main area where the words are. Maybe a line of small triangles in the blue area around the embroidery, or perhaps just straight-line echos of the "seam" border, about 1/4" apart in that area. Similarly, 1/4 inch echoes around the outside triangles?
If you had a variegated thread in the colors of the embroidery, and you are daring, you could maybe do a fill or design in the blue area outside of the triangles.