Pixel a one-point perspective image set in an outdoors urban environment.
Manupix has created this tutorial about perspective drawing:
Canvas Size - Max 250 (width) x 150 (height).
Colours - Max 25.
Transparency - No.
Animation - No.
The challenge thread will have all the challenge updates. The thread is also a great place to post your WIPs.
Is "all diagonal lines should converge at a single point" a limitation of the weekly or an attempt to explain one-point perspective?
Diagonal roofs, as a simple example of what I mean, would create diagonal lines that don't vanish to the same vp while the image is still considered one-point perspective.
Must be hell to word these challenges 
Finally, a challenge to encourage me to pixel backgrounds. Will probably look like a kids drawing :(
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It was an attempt to explain OPP. Also, yes, it is hell to word challenges :P
Out that line goes too.