The Puppet Warp is a function that enables the artist to distort selected areas on a drawing via a mesh overlay and the placement of pins. Although we’ve already applied certain transformations on selected areas (File/Transform/Scale, Rotate, or Distort), these are not comparable with Puppet Warp when it comes to ﬂexibility. Before starting any interaction with the selected areas the artist - as always - needs to familiarize himself/herself with the tool’s settings on its Options Bar:
Mode - determines the elasticity of the mesh, Distort being ultra-stretchy and Rigid being the opposite (Rigid is suggested).
Density - speciﬁes the spacing of the mesh, where small changes in moving the pins result in larger warps (fewer points is suggested).
Expansion - expands or contracts the outer edges of the mesh (changing it to at least 3 pixels suggested, so as to pick up the grayscale edges of the inked line)
Show Mesh - displays the pins without the mesh when unchecked. This helps the artist when executing ﬁne line movements.
(3) Pin down (click) the sections you don’t want to move and start “pushing” your line to the right direction (click and drag).
(4) Once more of your line is in place, use additional pins to prevent the sections from movement. Keep “pushing” the line.
You can download the short tutorial to learn this skill.