I had a simple orange frame that I decide to turn into an Evil frame for a more grotesque look. I used a modeling material. You can see it in a photo. The frame is quite simple to make and it doesn't take much time except for drying. You would want to let it dry at least for 12hours.
P.s. The pic inside the frame is not mine. Unfortunately I can't remember the author too.
Take any simple frame you have and put some modeling material on it. First shape the top corners. I used my fingernails for smoothing everything around. No other tools are needed :D
Make a thorn with a flat bottom like shown in a photo.
Put it on a frame where you want you thorn to be.
Smooth it with your fingers to blend with the frame.
Using this way add as much thorns as you want and leave the frame to dry at least for 12 hours (go to work, to bed, or where ever you want to ;)
When the modeling material is dry just take acrylic paint and paint it in any color you like. I recommend black ;)
It's done. Now you just need a photo of one of a hell butler to put in this on of a hell frame ;)