How do I?

[radikal_dj]

Create images like this?

 

[Augmented]

Quick method:

1. Run a posterize filter on the image, so you get the colours reduced to blocks.
2. Draw around the blocks with the pen tool.
3. Fill paths with colour
4. Save image and show it off.

For more, check out any "vexel tutorial" e.g. http://www.moltovivo.net/tutorials/vexeltut/vexeltut.html (this one opts for more detail in shading).


Super-quick method:

1. Run the Photoshop filter 'cutout' on image.

Results may vary (but most likely will be disappointing).