Hello!
I see you might find useful this article I was writing: Blog: Multi-pose skeletons guide
The first part explains how the various pieces can be dived in Photoshop, please let me know if you can understand everything or I made it too complicated.
The guide should cover multiple poses, skins, and directions, but you could consider it just for your specific case, ignoring the rest.
To give a brief answer, your current division should be fine, but have a look at the schemes in the article.
Do you have more unique skins or accessories? can the skins be recombined? if yes, a big atlas per item makes sense, if no, dividing by skin, or stages (basic stage, level, etc) is also fine. This is an answer that depends on how your game is going to be structured.
I hope this will answer some questions. Don't be shy and post on the forum 😃
If you want we also have an unofficial discord, I hang in there, but also most people tend to give great advice and are very nice: https://discord.gg/aA4ss3j
P.s. the guide is a wip and I can't make it public yet, so please don't share it yet!
Let me know how it goes! 😃
