Even though I've still worked on Heads-Up, I eventually lost interest. I updated the mock-ups but it was clear I was never going to make the visual style.
So, I've decided to make it open source. This way, people with the time and interest could probably use it.
I haven't named and grouped the layers, so it's pretty messy.
Heads-Up uses the Suddenly Spring brush set
Also if you want, give me a link to what you made using this.Some rights reserved. Heads-Up is released under a Creative Commons Attribution-NonCommercial license. Read the included license document for more info before using.