Eye liner can only be mastered with practice and to do that, you'll need to find what type of eyeliner is best for your look and skill level. Eye liner is one of those things that is just as good from the drug store as from the most upscale boutique.
Pencil eyeliner
Pencil eyeliner is best for a sultry, smoky look, which is good for porn princess wannabes, but is also good for tightlining your eyes for a more innocent, little-girly look. Tightlining is when the underside of your upper lashes are lined. Instead of looking done-up, it just makes your lashes look thicker and more youthful. Pencil eyeliner comes mainly in two different forms: roll up and just straight pencil. The roll up form is often favored by beginners because there's no need to sharpen it, but it can break off in the tube and then there's nothing to do but throw it out. To sharpen a pencil, put it in the freezer for an hour or so first to make it nice and hard, then simply sharpen it like you would any pencil, with a small, hand sharpener. When you're done, roll the pencil over a piece of tissue paper to remove any little splinters that may catch in your eyes!
Liquid eyeliner
Liquid eyeliner is good for a polished, retro look. However, it takes a very steady hand. You can use the brush that comes with the bottle, but actual eyeliner brushes often work better, as they are angled better. However, they have to be cleaned every time they are used, no expections. They can be cleaned wtih a little antibacterial soap and water in the palm of your hand or with a special brush cleaner. To get liquid eyeliner on a brush, touch the brush to the brush that came with the eyeliner. Don't try to cram it into the bottle! When you use the brush, stroke with the bristles, not against them.
Gel eyeliner
If liquid eyeliner is too runny for you, try a gel. A lot of women--and sissies--prefer it to liquid eyeliner. You will need a brush to apply it, which will need to be cleaned after each use. Sometimes you may need to warm up the gel a little bit by holding it in your hand for a minute or two. I had one sissy try to warm it by putting it in the microwave, which she soon found to be a very, very bad idea, and though it amused me to no end, do not repeat her very silly mistake.
When you start, your eyeliner is likely to be a little thick, but practice getting it close to your lashes and smooth before you worry about thickness. You'll be able to get a thinner, more sophisticated, more attractive look as you practice.