Also thank you for adding your THS profile/listing on here, I have had a peruse and your profile/listing looks great. The only point I would make is on your listing you state sitters need a car. Can this perhaps be removed if there is sufficient transport by other means to your location?
By removing this need for a car you will open your sit up to many more applicants.
You may find these attached threads helpful.
I am sure others on here will also take a look and offer their advice and feedback for you.