I think your photos are better... The lighting seems better.
The styrofoam texture is a bit distracting... I think if you really want to upgrade the quality of the photos you should consider building a little photo tent. Some dowels and a white sheet would probably suffice for materials, so you won't be out a bunch of cash making one. I bought one off of eBay for around $100 if I remember correctly(that included two lights with stands and several backgrounds), but you could certainly build one cheaper.