The quality and clarity of reference photos is the most important aspect of pet portraiture. I can only draw what I see, with minimal improvisation/deviation from the reference. Any more than the bare minimum can alter the likeness and result in a portrait that doesn't look like the subject.
Physical photographs and digital photos that cannot be enlarged without blurring (low resolution) are extremely difficult to work from. If this is all you have I will happily look at them to assess their suitability. If I cannot work with them I will let you know. If they are only suitable for producing a less detailed portrait, I will also let you know, so you can decide if you want to go ahead. I hate having to say a photo isn't suitable, but when you are paying a significant sum of money for a bespoke portrait, it's important that you know what to expect and thus avoid disappointment.
As a rule of thumb, if you open your photo on a computer (laptop or larger screen size) and enlarge it so it fills the screen, if it looks very blurred, it's unlikely that I could use it as a reference.
HOWEVER, I have produced a number of portraits from very old photos which were poor quality and my clients were very happy with the results. In every case I was clear about what could and couldn't be achieved and why. They knew what to expect and they weren't disappointed. If in doubt, please just ring me, as a conversation can make all the difference. Click here for more information about choosing reference photos.