http://videohive.net/item/handwriting-watercolor-package/18031845

Here is the great Handwriting Watercolor Alphabet + Elements.
Project features:
100% After Effects
Perfect for 4K
Easy to customize and control
Fast render
No plugins required
Full Alphabet A-Z/a-z
Basic Math Symbols
29 unique paint elements
11 beauty bouquets
Blots, brushstrokes, text fx and more
29 different paper texture
Help file included