Blending distorted circles:
- From two circles located at the ends of the future blend, make three or four distortions following the perspective. More shapes = softer transition.
- Draw a spine path
- Select the Blend and the Path and go to Menu Object > Blend > Replace Spine
- Use the Group Selection Tool to select each shape and rotate or scale following the spine
- Duplicate the blend and replace the spine with different paths
Source : Link , Question Author : pattyboylmz , Answer Author : Community