I'm sharing a technique I used to hang a plaque I made for some coaches.
I did not want to use 3/4" Cherry and buy a Keyhole Router Bit, since I already had some Cherry veneer over MDF.
Instead, I used a couple of backplates of MDF to make my own, cheap keyhole for hanging.
I build my stuff at TechShop in San Jose...
Step 1: The Keyhole
Let's build a Keyhole in CorelDraw.
1. Build a .25" circle
2. Build a .5" circle
3. Connect the circles by dragging the center X of the small circle to the top Node of the large circle.
4. Select both circles
5. Combine the two circles: Arrange --> Combine
6. Weld the two circles: Arrange --> Shaping --> Weld