Here's a pic of mine..

I used greenstuff on the hood/nose of the bike and balsa wood to make tail fins.. not totally necessary but it was a fun expiriment. For the warlock, i used the model that had the sword pointing down with the other arm pointing straight out with a pistol.. I chopped off the body at the waist and one of the arms.. then I used the biker legs and one biker arm, the other I bent a little and attached the farseer's singing spear, and used greenstuff to make the robe. It was my first time doing anything major with greenstuff so it's a little rough. But, hopefully that will give ya some ideas