Frame

First you will print back part. Take piece of thin thread and make eye for wall hanging throug the small holes. Next take your picture and make it circular (diameter of the circle can be maximum 126 mm - better 124 mm/radius 63 mm) by compass and scissors. You can glue it on if you want in the center of the back part. Meanwhile print front part with supports. Almost in the end pause printing and change filament. Choose some pretty and contrasting colors like first pink and second black. It can be pretty if back panel has also different color. Remove the supports from front piece and clean it. Click both parts together. If you want or need, you can glue it together. Done. 120 mm diameter of your picture will be visible. Hang it on the wall. 

But you do not need to use the back panel at all (than picture can be max 130mm). 

Enjoy.