Line a standard baking pan with parchment paper.
Prepare your toppings (crush, chop, separate colors, etc.) before melting your chocolate.
Put chocolate chips/wafers into a microwave safe bowl and heat at 30 second intervals. Stir after every interval.
Once chocolate is almost fully melted, do not overheat. stir continuously to get any remaining chips melted. consistency should be very smooth, and should drip off your spatula.
Pour melted chocolate over the lined baking pan and spread out evenly using a spatula. you can spread the chocolate as thick or thin as you like, but thicker will make the bark much sturdier.
Top your chocolate bark with your toppings, sprinkling them over the chocolate evenly.
Place pan in the freezer for about 20 minutes, or until the chocolate has fully set.
Break up the bark into smaller pieces and serve!