I believe a life like sketch is more personal and intimate than a plain photograph.
I offer 9" X 12" and 14" X 17" sketches.
I start with high resolution, contrasting, close up face photo that you supply. By contrasting, I mean if your pet or human is light colored, I prefer a dark background and vice versa so I can see detail. I recommend the photo be taken with the camera level with the subject, rather than shooting down at them. If your camera or phone offers different size options, send the largest format, or most pixels you can.
I give you a "No Risk" guarentee...
Once I have the photo I create the sketch and email you a watermarked photo of it. When you approve the sketch I then send a PayPal link for payment.