For comparison purposes,below is the Maine Coon Breeders and Fanciers Association official Standard.
MCBFA is a national organization dedicated to, The promotion and protection of the Maine Coon Cat

General Statement: The Maine Coon is a solid, rugged cat and is America's only natural longhaired breed.
Type must not be sacrificed for size or size for type-the optimum being a large typey cat.
Females are somewhat smaller than males and allowance should be made for slow maturation of the breed.
Head: Medium in lenght and width, with a squareness to the muzzle. Allowance should be made for broadening in males. Cheek bones high. Nose medium in lenght with a gentle concave curve and no break or bump. Chin firm and in line with upper lip and nose.
Eyes: Large, wide set, slightly oblique setting. Eye color can be shades of green, gold, or copper, thought white cats may be blue or odd-eyed. There is no relationship between eye color and coat color. Clarity of eye color is desirable.
Ears: Large, wide at base, moderately pointed and well tufted. Set high on head approximately an ear's width apart. Lynx-like tipping desirable.
Body: Muscular, medium to large in size, broadchested. Body is long, with all parts in proportion, creating a rectangular appearance.When viewed from the rear there is a definite squareness to the rump. Neck medium long.
Legs and Paws: Legs Substantial, wide set, medium in lenght, contributing to a rectangular appearance. Paws large, round, well-tufted (5 toes in the front,4 toes in back).
Tail: Long, equal to body in lenght (distance from end of rump to shoulders), wide at base and tapering. Fur full, long and flowing.
Coat: Fur on shoulders is short, gradually increasing in lenght along back and sides, ending in full britches and long shaggy belly fur. Fur is soft but has body, falls smoothly, and lies close to the body. A slight undercoat is carried. A full ruff is not expected, however, there should be a frontal ruff beginning at the base of the ears.
Coat Colors: All Recognized colors. White trim around the chin and lip permitted except in solid colored cats.
Penalties: Delicate bone structures, untufted paws, poor condition, nose break or bump, undershot chin, short rounded muzzle.
Disqualifications: Buttons, lockets, spots, overall even coat, crossed eyes, kinked tail, incorrect number of toes.