This is a good guide
Step Two - The Appearance
So, you've got your name. Fantabulous. But wait, now you need an appearance to go with that. My advice here is to just be as creative as you can. Play around with different colors and designs; you'd be amazed at what you can come up with! Try out some of those markings you don't see people using a lot, too. Some of them can look really cool with the right color scheme. Also, try some of the more unpopular colors; I'm not talkin' the ugly ones, just the overlooked ones. Beige comes to mind, though there are plenty of others.
I'm going to add to this by saying; if you have an evil/dark/etc character they do not
have to be coloured in dark hues. Or the reverse, a pure "angelic" character does not
have to be coloured in light hues.
Sure, it's natural we associate bad with dark and good with light colours but there's nothing wrong with a light coloured, evil OC. Their colour doesn't make them any less evil.
AND
If you want to make an Albino OC, for the love of god they DO NOT and WILL NEVER HAVE blue/other coloured eyes (with the exception of red of course).