Not a new idea for a custom Destro, but have been wanting to try it myself. Base is Mr Sinister. Ground away the hair and chest/forehead diamonds. Sculpting compound for the collar, belt, and covering the body lines. The belt buckle is a paper clip. Wrist rockets and grenades are fodder.
The figures contained in the Custom Showcase are not for sale by Figure Realm, and the creators of the customs are no way affiliated with Figure Realm. The Custom Showcase is purely for entertainment purposes and only provides a means for the creators to show off their work and trade ideas. Figure Realm does not make or sell customs.