Here's an Advent Tree that I made using a kit from Tando Creative and Frosty Papers from Craftwork Cards.
The kit and the mini advent numbers came from http://www.theverysmallcompany.co.uk/ I used Dylusions Primer followed by Coastal Blue Kaisercraft paint. The numbers are painted with a silver Tim Holtz Dabber and I painted them before removing them from the sheet. I also used the Dabber to paint the top of the tree.
It did take a long time to make but it was worth the effort.