Graphics for mobile tank game

I have about 35 images of very varying sizes (the smallest are 10x10, the largest 256x256) that must be produced for a 2D bird view tank game. As an example of the graphics style I aim for (but somewhat higher quality than this where possible): Basically, the small objects are simply pixel art. For the larger ones (e.g. a grass field background image) it's probably OK just to scale down a photo and perform some image processing on it to make it look more cartoonish. Beware though, everything must be original work, which means the photo obviously must not be recognizable after image processing. I will send you a PDF that lists all graphics - in addition to that I'll be available on this site to discuss requirements further. I expect some form of proof (i.e. sample work) that demonstrates your capability of completing this project at a satisfactory level of quality. For the right person this shouldn't take more than a day in total. Quick completion would be appreciated but it depends on the cost. Generic bids that don't discuss anything stated in the project description will be ignored.