threefiveo125go
What I would do is convert the image to black and white first. Then convert to vectors using a trace program, adjusting as necessary to get clean lines. If it turns out ok to this point, size it to the final dimensions and send to pathtrace as dxf file. Use the in groove and out groove features in pathtrace to cut what you can and finish by hand with exacto. Peal off appropriate areas carefully.
Alternately just trace by hand in pathtrace. (the ingroove and outgroove features cannot be saved for some reason, but you can save the lines as v-grooves and change them back if you need to cut it again. If it is going to be too small to cut with cmc you could use carbon paper and trace to blue painter's tape, then stick the tape lightly to mat and cut by hand through the tape. Then peal off tape and mat face where appropriate. Pull tape at a low angle to mat and it should come off clean. Practice on scrap first. Hope this helps.
Randy