The variety is the point
Wild Syrians are golden agouti — sandy brown with cream belly. Domesticated Syrians come in cream, white, black, banded (a vertical white stripe), dominant spot (white with colored patches), satin (a high-shine coat that catches light), and longhaired (the teddy bear). The portrait reads which variety your Syrian actually is from your photo and paints to that, not to the wild type.
Library and Garden suit the form
The Syrian's natural upright seated pose — paws clasped at the chest, body forming a small barrel — is the same pose Library portraits center on. Garden sets the same posture in soft natural surroundings, which suits the species' gentle register. Watercolor renders the longhaired teddy bear coats with directional brushwork. Pop Art tends to flatten the round form and is less suited.
Commission while the coat is at peak
Syrians live two to three years and the coat is at its richest in the first twelve to eighteen months — golden agouti deepest, banded patterns sharpest, satin sheen at full reflectivity. A portrait commissioned at peak coat condition holds that exact register on a wall long after the animal has moved through it. The brevity of the species is the reason to commission early, not the reason to wait.