I'm not sure about tutorials but for angels wings I would start by
making the bone structure for a birds wing from reference then create a single feather and place them at key points for each bone. then copy and move the feathers to fill in the gaps over lapping them.
Senior Member
making the bone structure for a birds wing from reference then create a single feather and place them at key points for each bone. then copy and move the feathers to fill in the gaps over lapping them.