I begin by cropping on the basic sprite frames I know I going to need. For example walking frames or ‘taking damage’ frames.
I do all using Microsoft Paint as opposed to Adobe Photoshop where I plan to the rest of my image editing for this project. Because I find you have more control when cropping canvas size on MS Paint.
Then began to put the compiled frames into folders such as ‘EnemyWalk’ or ‘EnemyDeath’ for easy identification when I turn them into animations in Construct 2’s engine.