Line a large baking sheet with wax paper.  Pour the 12 oz package of candy melts into a microwave-safe dish. Follow the package instructions to melt them in the microwave.  Then pour the melted chocolate out on the prepared baking sheet and use a large spoon or spatula to spread the chocolate to about 1/4" thick.

Once the chocolate is spread out, use the large candy eyes, red M&M and 2 pretzel twist halves to form 'reindeer' in the melted chocolate.

You can add as many of these reindeer as you would like to your chocolate.  Then allow the chocolate to fully set.

Once hardened, break your Christmas bark into large chunks that are perfect for eating.