Great color and contrasts. I don't like frames that are attached to each other, however. It diminishes the quality of each piece. Remember, the negative space between frames/mirrors is a design element as well.
DIY Tree Branch Seahorse **Mi(my) WAY: combine with the idea of the lit wood Christmas tree on the canvas, do any shape on the canvas then add lighting. Or weave lighting through out or around the seahorse or whatever u design.