Fairy brush: http://redheadstock.deviantart.com/art/Pixie-Fairy-Photoshop-and-GIMP-Brushes-51511674
Firework brush: http://redheadstock.deviantart.com/art/Fireworks-Celebration-Photoshop-and-GIMP-Brushes-59276192
Fairy wing brush: http://redheadstock.deviantart.com/art/Fairy-Wings-Photoshop-and-GIMP-Brushes-75390393