I have just finished making my tree topper for this year. I have used Gothic Church Window and Creepy Gargoyle . I cut out the windows and created a stained glass effect on acetate to go behind it, everything else was coloured with promarkers, I added a piece of card on the back to I could slide it over the top of the tree. It looks pretty cool with the lights just inside it.
If you are here looking for my 4th day of creepmas piece it is on the previous post :)