Extra Small – 8″ x 6″ / 15 x 10 cm
As a general guide a 8″ x 6″ size is suitable for a single pet’s head and shoulder portrait:
Small – 10″ x 8″ / 25 x 20 cm
A 10″ x 8″ gives a portrait with much more detail or a horse or larger pet’s head and shoulders. It is also large enough to show up to two small pets:
Medium – 12″ x 10″ / 30 x 25 cm
A 12″ x 10″ gives lots of detail for one pet, can fit a full body portrait and allows enough space for two or maybe three pets.
Large – 16″ x 12″ / 40 x 30 cm
This size allows for a lot of detail, even on full bodied and multiple pet portraits.
My standard sizes also include A2 (23″ x 17″) and A1 (33″ x 23″) which increase the detail and the amount of pets that can be depicted. Custom dimensions are available by request.