Organized, Sincere and Fun
It all depends on interaction. I would prefer to meet the clients with dog/s first to see if the dog feels comfortable/trusting around me. After all they are the ones getting the care and fun time.
I often dog sit for my friend's and boy friend's dogs. Have experience taking care of with Scottish Terriers, French Bulldogs, German Shepherds, Labradors and Schnauzers.
I have always loved dogs since I was a kid. Hopefully ...