About the Envelope Tool
NOTEIf you use the Contour Editor, Perspective or Envelope tool on a textured brush stroke, it will deform its texture to fit the new shape of the brush stroke. Note that this will resample the texture, which is liable to make it lose quality.
NOTEYou can also apply an animatable Envelope-like deformation on drawings or other elements in your scene using the Mesh Warp node—see Mesh Warp Node.
NOTETo learn more about the Envelope tool options, see Envelope Tool Properties.