Sadly, it's pretty much cancelled. I'm leaving pixel art in favor of fanf-fic writing and writing in general. I'm sure it will be much more successful and enjoyable, since I'm taking a literal college class on effective writing. I will do illustrations and art, which will be of much higher quality, but the pixel art days are effectively over (unless somehow Scott Cawthon himself got a hold of me or something.)
When and if you feel like you want to recolor the FNaF HW sprites to match that of your previous attempts [particularly V4], let me give you some pointers.
For FNaF 2, everyone except Withered Bonnie is in a warm light. Withered Bonnie is in a cold light, unless you want to go with the Ultimate Custom Night palette. His bow tie is also dark red, similar to his FNaF 1 counterpart, unlike the pale red it originally was.
Mangle has yellow eyes. Looks like you didn't use the saturation for V4. Her cheeks and lipstick are a different red color from her bow tie.
Meanwhile, JJ's nose and eyelids are pink and her cheeks and propeller are blue. Speaking of her propeller, it is the same height as BB's propeller. The soles of their shoes should also be darker.
For FNaF 3, since Phantom Mangle is revealed to be green in UCN, then it might be a good idea to revise the palette for Phantom Mangle, if not everyone else.
For FNaF 4, certain Nightmare characters [like Chica and Fredbear, for example] are in a cold light, unlike everyone else, which uses a warm light, similar to the FNaF 2 example.
And speaking of FNaF 4, because you have given up with V4, I might ask LunarFlareStudios to finish the sheets, if that's okay with you.
Thanks fam! Yeah, I still have the stuff from FNAF 4, reference pics included. I can pass that stuff on to whomever wishes to finish that project. I'm more into writing now anyway.
Did you try sending me a DM by chance regarding this? My DA is glitched up and says I have an unread message, but then doesn't show anything.