I think you're learning too many programs. 3DS Max, Blender, Photoshop,
Substance Painter, ZBrush, Unity, UE4, Mudbox, Quixel, Maya, Marvelous Designer, and you're inquiring about Substance Designer? Your question about SD aside, learn either; Maya or 3DS Max or Blender Unity or UE4 ZBrush or Mudbox As someone just…