Amazon.com: Photoshop CC - Touch-Up And Image Adjustment: Supports Photoshop CC, CS6, and Mac CS6 (Photoshop CC - Level 2) eBook: Hutchinson, Jeff: Kindle Store
Feathers Photoshop Brush Set - Brushes - Fbrushes
30 Sets of Soft Feather Brushes | Naldz Graphics
Feathers Brushes Set 1 by Falln-Stock on DeviantArt