Let me introduce myself first,
I'm George Janiashvili, 3d artist with 4 years experience in 3d modelling, worked on few indie video games as 3d artist, one cartoon movie, and lots of random freelancing over time(well, only couple projects on this website though).
If I understood correctly, you have 3ds Max file up and ready and your only need is changing color of wallet and rendering it from different angles?