For example, the first words you see on Elm's site are "A delightful language for reliable webapps.". So you'd use Elm to make webapps, and it should be enjoyable to use. Ruby says "A dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write." Note how none of these focus on how the language is implemented; most users don't care. The language could have a compiler written in Brainfuck to compile to Lua, but that's all under the hood.
So write a sentence or two about why a programmer would choose Clojurescript for a task. What kinds of things does Clojurescript do well?
Also, I'd suggest motivating the snippets the way Elm does, where the user isn't left guessing why a snippet is there. It's explicitly explained.