Could anyone give me any tips or pointers on how to draw in coat shimmer to a horse that has little to no coat shimmer already? I just can't seem to puzzle it out on my own c:

Can you explain what you mean by coat shimmer?

Agreed, I'm not sure what you mean?

Could you possibly clarify what you mean? I agree with Cassa and Kirralee. Are you talking about horse coat highlights?

draw out the highlights in white set layer to overlay duplicate layer if needed

Yes! I mean the horse coat highlights! Sorry, I typed this out kinda late last night xD