Trust me, you don't need help. Just put a blob of the chocolate down, flatten it out by putting the rounded tip of the spatula in the center far edge of the blob and pull toward you. If you don't like the swipe, simply scrape the chocolate up with your spatula and try again. Wipe the spatula off between swipes. Work with 1 blob at a time at first, keep the chocolate just warm enough to work with, stirring between swipes so you don't get any scorching.
You can also use ice shards to decorate cakes. Simply melt sugar with just a bit of water, but don't let it start to darken, pour it out onto parchment or silpat lined pan, let it harden, then break it up. You can color it with food coloring as well.
If you want to get really fancy, you can make a frame with royal icing and then fill it with melted colored sugar to make faux stained glass.