Depends entirely on the technique and subject matter. Drawings take between 5 minutes (level 1), 30 minutes (computer) and 8 hours (portrait), paintings between 5-15, prints between 3-10 (if we don't count that, for etchings, paper has to be prepared for 24 hours), and paper-making is mainly preparation and waiting for stuff to dry, adding up to up to 72 hours.
Depends entirely on the technique and subject matter. Drawings take between 5 minutes (level 1), 30 minutes (computer) and 8 hours (portrait), paintings between 5-15, prints between 3-10 (if we don't count that, for etchings, paper has to be prepared for 24 hours), and paper-making is mainly preparation and waiting for stuff to dry, adding up to up to 72 hours.