So I recently discovered that in Procreate I can draw a character on one layer then create another layer. Set the opacity level down on the previous layer making the layer act as onion skinning. Then you can create the character again in a different pose. Hide the first layer create a third layer repeat process until you get all the poses drawn. Then you can go through each layer and move each image beside each other in sequence. Change the opacity back to 100% on all layers. Then you have a character atlas map or a sprite sheet. Now I can use my iPad Pro to create sprite sheets in a simple way for gaming.