The background image I found here: http://etc.usf.edu/clipart/44600/44684/44684_med_castle.htm
The knight in the front here: http://www.my-coloring-pages.com/castles/gallery/image/knight/
The knight was cut out by hand and popped on top with 3D foam.
If I make this card again in future I will make the flags 3D elements as well.
Markers: Spectrum Noir.