Beginner is a sewer with little experience and is new to sewing terminology.
Advanced Beginner is a sewer who has some knowledge of sewing and has used a sewing machine with confidence, understands sewing terminology and has completed projects like skirts, pajamas or simple tops.
Intermediate sewers build on the knowledge of an advanced beginner with sewing techniques beyond the basics like special pockets, closures or facings. He/She/They have completed projects like dresses, blouses or pants.
Advanced sewers can complete complicated techniques. Includes fine dress making, tailoring and corsetry.