Tesan Srdjan

Assuming That you know How to make groups and UV's in Zbrush for that Wing (Dragon) use this file and I think its not complicated to make that Membrane. Try ... You can make membrane using Groom , you can use also Vellum , you have endless Solution in Houdini for this , use scatter and connect adjacent smooth and polywire...Or just Post that Wing with correct Uv's .

you can use Particles with minPose on that Uv's and make diff variation based on Noise Cd and Rest .

Search tutorials for Force Edge Bundling in Houdini , you gonna Get more Freedom to Art direct those membrane veins !!?!?! otherwise
go to qiita web site and search for advent Houdini calendar vector Tips , you gonna Find some Nice growth Veini-sh Stuff ...Search also for Entagma tutorials Houdini.Have Fun.

Aloha
Can you post File