In order for me to get the best possible painting of your pet, I need a high quality photograph. Most people tend to use their phones or tablets as they now have very good cameras, this is fine, but a good camera may work better if its available. My advice is that you take a wide range of photos so that you can be sure to provide me with the best possible photo for a portrait. A good Photo is key to a pet portrait, the better quality the photo, the better the portrait will be as I can see the details more clearly.
Ideally take the photo close to the pet, as it will get a clearer focus on the fine details when zoomed in. Also make sure the lighting is good and even if possible.
Out of focus and too dark
Clear detail and lighting