While many photographers use Instagram to show off finished work, it can also provide a useful glimpse behind-the-scenes at your creative process. As Chase Jarvis is fond of saying, artists should never be afraid to show the work behind their work.
In that spirit, this 3-minute tutorial from photographer Mathieu Stern could be quite helpful. In it, Stern walks you through creating a before-and-after GIF of your post processing in Photoshop.
The end result is a nice, short animated before/after highlight of your work that's easily shareable on Instagram and other social media platforms. Pretty neat.