HOWTO make a Tardis cake

Craftster user Umbrolly cooked this magnificent Tardis cake for her sister's birthday. Apparently the eerie Martian planetscape beneath the tardis was meant to be a nice smooth rectangular cake but went wrong -- I think it makes the whole thing just perfect. Lots of documentation on Craftster if you want to try your hand at it.

It looks really wobbily in these pictures, I used a different cake recepie to usual and it was a bit too moist, so what started out nice and rectangular went sort of squishy.
Link (via Craft)