This is what I did this weekend. An arcitecture study in linoleum. It may look a little familliar to some readers.
Both were made using sponge technique, the bicolour one (right) was made using two different lino boards as well.
Here are the before-and-after pictures (click on the photos to see larger versions):
Around 9 hours of cutting went into it, and an hour or two of printing as well. Fortunately the subject wasn't new to me, so I didn't have to draw sketches first.
The bicolour one was donated to a charity sale, and some lucky person bought it. All money from the sale went directly to the Danish charity and education institution Kofoeds Skole.