The bookbinding session

An original notice containing five intentional errors.

The session begin at ten o'clock in the upstairs workroom. All participant's should collect an apron from the hooks by the door. Tutors can demonstrated each stage again if anyone needs extra help. Paper, thread and card will be provided, so it is not neccessary to bring your own materials. Anyone unable to attend should contact the organiser imediately.

Proofread the notice. Identify the five errors and write the correct forms. You do not need to rewrite the whole passage.