BretonMainland inner European influences. A combination of Austrian, French, German, Polish, Romanian. Dark to dark blondish hair and dark eyes. Hair is in-between being totally straight, but not overly curly, either. Somewhat thinner and shorter than the other races.
ImperialSkin ranging from very light tan to bronze, like the Greeks and Romans. Eyes all shades of brown, some of them becoming hazel-green. For males, hair is usually close-cropped in a military fashion or fully shaved. Not very tall, but broad-shouldered. Mild Italian accent with hints of Greek and Macedonian. Have no problems with public nudity (like the Romans), and like to have even tans.
NordSkin goes from fair to slightly tanned, with hair going from blond to red to light brown. Black hair very uncommon. Beards and long hair fashionable for men, usually braided. Women have their hair braided as well, most of the time. Tattoos as well. Blue to green eyes. The occasional violet or gray. Tall and stout body structure. Square jawed. Accent is Icelandic, Greenlandic, with hints of Danish, Norwegian, and Swedish.
RedguardSkin goes from bronzed to a dark shade of brown. Eyes all kinds of brown. Hair is usually curly, sometimes done in dreadlocks if long enough. While tall as Nords and muscular, they are more lean and sinewy than the other races. Strong jaw. The wealthier Redguards may have fancy ear or nose piercings. Accent is a combination of north-central African, Indian, and Middle Eastern.
DunmerAn ashen-gray, with some having the tiniest tinge of blue. Hair is long and straight, usually a kind of gray-color. Usually kind of thin in a bony, muscular way, and not too tall. Pointy ears. Eyes range from deep red to lightish dark pink. Gravelly, husky, throaty smoker's voice. Faces are kind of angular, with high cheekbones, sharp chin. Elf ears, but not too pronounced. Accent is... too gruff and tough to tell. Kind of Native American. Ashlanders use tongue clicks as code out in battle. The more Ashlander-ish ones have more tattoos/self-scarring. Fashionable for females to wear one earring if single, two if in a relationship.
BosmerSmall, but muscled. Tannish, golden skin. Faces are somewhat heart-shaped, or rounded. Very dark eyes, straight hair ranging from light blond to very dark brown. Elf ears, not as pronounced as the others. Peruvian accent. Usually sporting bone piercings, tattoo/scarification, and bone transdermals.
AltmerTallest race, quite skinny, but still proportionate. Albino-pale skin with a pretty hint of gold. Eyes are usually some shade of brown. Hair is straight, ranging from white to a dark blond. Elf ears quite pronounced. Faces are smooth and oval-shaped, if that makes sense. Mild Chinese-Philippine accent.
OrsimerTall, sometimes even taller than Nords and Redguards. Stout, muscular and broad-shouldered. A dark green skin tone, though can be a few shades lighter. Lower canines are long, sharp and exaggerated, coming out of the mouth; on some rare occasion, the top canines will be the exaggerated ones, and some special cases (called 'blessed' 'special' 'lucky bastard') have all four canines be huge, which is considered very attractive. Jutting jaw, flat slanted forehead, wide cheekbones. Flared snout nose. Eyes are almond-shaped, goldish-yellow to goldish-brown. All Orcs seem to have a kind of melancholy, solemn expression, but that's just the way their face muscles are by default. Aside from the canines and front teeth, all other teeth are flat and, uh, herbivore-like. Hair ranges from black to a grayish green, and has a little curl to it naturally; often worn in dreadlocks, ponytail, and so on. Often have ritual scarification. High-ranking Orcs have the rest of their teeth filed to sharpness. Nails somewhat sharper than the rest, but not Argonian/Khajiit style. The elf-style ears are quite pronounced, and can even have the earlobes be kind of big. Mongolian accent. When respected, wear little bits of broken weaponry or armor as jewelry or good luck charms.
ArgonianOblivion-style legs, slit-eyes in all the colors of the rainbow, nails like claws, big sharp teeth, spiny backs and tails. However, they should be more angular, if that makes sense. They don't so much walk across the ground as they do... shift. Not overly muscular; think monitor lizard as the bulkiest an Argonian can possibly be. Scale color can be any combination of the primary colors. Scale textures depends on background (smooth like a snake, rough like a crocodile, spiky like a bearded dragon, etc.) The spines on their heads (which act like hair) will move around, depending on their mood. Kind of like the Khajiit cat ears. Voice is like a smooth, calming whisper, like an advanced kind of hiss. Have have webbing in between their clawed toes (yes, like lizard feet. Yes, they can wear boots and helmets.). Gills on the sides of the neck, for water-breathing. Pacific Islander accent.
KhajiitOblivion-style legs. Cat ears, whiskers, tail, cat nose, fangs, and so on. Fur color, length, and texture depends on background; brown, orange, white, black, gray, striped, dappled, whatever. Whisker length depends on age. Cat eyes, usually coming in shades of green and gold, but very rarely blue. Voice is a purring, kind of yowl-ish meow. Hands and feet are kind of... paw-like. They have the little pads, and stuff. And retractable nails. As Khajiit get older, they start developing a patch of white under the chin, on the throat, and front of the chest (like real cats!). Older males might have fuzzy beards. Eyes glow in the dark around light sources. Inuit accent.
Dwarves are stout, strong, and Scot-Irish, but you know that. Red or bronze hair, slightly tanned skin, brown eyes.
The Akaviri are freakin' snake people, man.
... How's that?