Subscribing to my mailing list is the best way to ensure you get a commission next time I open. I send out an email 12-24 hours before opening for commissions to let you know exactly what date and time I will be opening, then another email when I am open.

I also often do not post publicly that I am open for commissions until about 30 minutes after sending out the email to make sure those subscribed get the best chance possible.