While working on Batman along with others on the IMT forum here, I decided to record the process of animating the transition between a standing sprite and a crouching sprite. Basically this tutorial will show the process of taking one finished sprite and animating it.
[youtube=425,350]5RBVoE3gjFA[/youtube]
[youtube=425,350]_KG1mkYAQKo[/youtube]
[youtube=425,350]aJkPNmk-bJ8[/youtube]