Hi @HEllis,
here's how to insert a brush into this thread:
1. Go to Rebelle menu -> Help -> Show Library Folder... and open the "Brushes" folder
2. Click "Reply to this topic" at the bottom of this webpage
3. Click "Insert/Edit Image" when editing post:
...and open or drag & drop brush file (.png)
With Rebelle 4 release we introduced the online Brushes library where you can post your Rebelle 4 brushes for others to download and use:
escapemotions.com/products/rebelle/brushes
One account,
many possibilities