Now, we get to see the live drawing app in action and play with some of the different options we commented out in the code.

Run the app with small, round, colorful, fast particles. Just tap the screen in a number of places, as demonstrated in the following image:

Then, resume the drawing, as follows:

You can do a kid's drawing with particles that are small, white, square, slow, and of long duration, as follows:

Then, resume the drawing and wait for 20 seconds while the drawing comes to life and changes: