WOW, you did a really great job! I've been doing ct for the last 15 or so years and I do them on almost all my cakes. At first I tried the colored wafers, but now all I use is almond bark, it's consistency works better for me,it's very affordable and I can get it at any grocery store. for dark colors, black red, dark blue I use candy colors, but for everything else I use icing colors, gel or paste, and to stop it from seizing up I use paramont crystals. You can get them at the local cake supply store or I order them from country kitchen sweet art
www.countrykitchensa.com/. With icing colors there is such a endless range of colors, compared to wafers or candy colors. I also get plastic bottles with a coupler so you can change the size of the tip you need, I have tons of them I just store the unused candy in them for the next time I need that color.
www.countrykitchensa.com/catalog/product.aspx?T=2&productId=619471