Payment is required at the time of booking. I also accept e-transfer to firstname.lastname@example.org if you do not wish to use credit card. Pick your date and time from the calendar available in the booking button and send an email with a request for an appointment, including the date and time. If you are unsure what to book, contact me and ask. If you do not wish to book in advance, wait until the day of and select "same day appointment" to see if there is any availability that day.