I made this sculpt in Blender, and then try to do retopology. Thinking I was done, I added the multires modifier, and the shrinkwrap modifier, so I'll be able to project the details from the high poly, and then bake a normal map. But when I add the modifiers, it's causing stretching for some reason. I am not sure why, or how to fix it. Any help would be appreciated.

[![High Poly][1]][1]


[![Retopo Low Poly][2]][2]


[![Retopo With Modifiers][3]][3]


  [1]: https://i.sstatic.net/qWUYZ.jpg
  [2]: https://i.sstatic.net/A2Fmu.jpg
  [3]: https://i.sstatic.net/sff5v.jpg