Here's a great eyeliner tip I learned about years ago. Try it out and see how much wider your eyes are. (I use Almay, a drugstore brand).
Step 1: Start with a completely bare eye, no shadow or mascara.
Step 2: Apply liquid liner in the upper lashes. Dot the liner into lashes, pushing them aside if need be. The result is not supposed to be a line. It's supposed to look as if the lashes themselves are super thick at the root.
Step 3: Apply mascara.
Step 4: Compare eye to other naked eye and see if you love the results.