It's not possible, nor is it wanted, to embed images or videos here.

My advice for you is to sit back and structure your presentation. If you feel that you can better "show than tell", please really do think about whether your "show" consists of the same thing you would have written. If you feel that the big structure can only be shown in a screen cast, think about how you could reduce the big structure to some simple example that shows the same concepts except in smaller text. For example, instead of generating and outputting HTML, you could generate and output plain text. This reduces the size of the templates and the cognitive load for the reader who then clearly sees what is text and what is tagged control structure.

You should also find out what your actual goal is with your system. If you want to attract more users and/or developers, you will need to write good documentation so that your system becomes usable for people not familiar with it already. You will also need to compare and show where (and how) your system is better than existing and established systems.

If you "just" want to make your system better (faster, less fragile, more extensible), you will have to give us more to work with than just the 10,000 ft. explanations of how things work, and also in what dimension you seek improvement. I can imagine at least three ways to implement the interpreter/compiler for your language, but without knowing what way you chose, I can't give any concrete advice other than general points.