Experience Levels Explained:
Beginner: No sewing experience at all/refresher.
Once you have learnt to use a sewing machine (in one class or less) and made one item you are an improver
Improver: You have used a sewing machine to make one item or more
Intermediate: You have made at least 2 simple items of clothing with a sewing machine
Experienced: You have used a sewing machine to make many items including clothing