The cost of stamped concrete here is going to be low. It's a do-it-yourself type job on this small an outdoor space. For a fine finished patio, even slightly larger than this one, it may be worthwhile to bring in a contractor to get the job done professionally and with a warranty.
Concrete stamping looks like it will be straightforward. First comes the surface preparation. Next mix the cement properly. Pour the cement. Press patterned molds into the cement to create the look of interlocking pavers, various styles of formal stone flooring or create a random pattern. Once the cement is dried and cured, stain is applied to replicate the color of natural stones.
The ConcreteNetwork website offers a quick tutorial on how stamped concrete mimics stone when used for patios.
A big choice is which kind of pattern to use. A cobblestone pattern could be fun. Slate slab patterns are a little too formal and perhaps to large for this space. The randomized patterns are more appropriate here, especially since the ground surface is what will tie together the various vertical surfaces in the outdoor patio space. So it looks like the river stone stamp or the random interlocking sandstone are the best choices so far.
[Photo: Lisa Kong]