Can't say I'm an expert on coloring by any means, but one thing I can say is that layers and overlays are super helpful for coloring. Another really helpful thing that made a significant difference in my own coloring style was to save the airbrush tools for less intricate forms, such as skin and most clothing, and use slightly fuller tools [like pencil/soft pen tools] for things like the hair and small details. One final tip is that using white for highlights and black for shading can turn out some unsatisfactory results most of the time. There are lots of videos that go into this a lot deeper and have much better information about this on YouTube, and I suggest taking some time to go over some of them and practice their technique.
and it also depends on the program you use and it's capabilities. I wish you luck- coloring is a really hard thing to get used to ;w;