It's a shame that the volume of traffic has gotten as high as it has here on the site, because I now often miss beautiful works like this one in the rush of images I see. The canvas effect really makes the image pop, and your gentle blending of colors reminds me of something I'd see in a fine gallery. The border you created and the lovely matt really make this image relaxing and pleasing to the eye.
I probably would focus more on the smaller inset picture and either disregard the outter red, or make the inset picture larger and center it whereas the outter red is a border for an otherwise fantastic piece of artwork.