Something I really struggled with in both the Burgomaster's Mansion and Death House was the inclusion of objects being covered by a white dust cloth. I don't know how it took me so long to try using the Pattern Shape Tool with a transparent white color, but it worked pretty well in the end. Now, getting the bear head mounted on the wall was another story - I had to place the bear rug on the 'below ground' layer, and cut the bear rug's shape out of the floor. Not ideal.