It's actually quite simple: i started building the wing's bones (the thickest strips on the actual wings), then I covered the skeleton with the blocks of the dragon's skin and then I filled the gaps between the bones trying to give it as much dynamism as possible: wings should have their shape inflated by air




If you want an advice, i suggest you to use lighter blocks on the wings bones and on the wings edges.

Also, if you want to have a worn aspect on the wings, you can break casually 1 or 2 blocks in the wing's center and then you can give a irregular appearance at the wings bottom edge breaking some blocks.



I hope i was helpful :D