Cosmetic Cotton Wool buds with a pointed tip pretty much available everywhere. They really do help the accidental blob on the corner of your eye turn into a sharp wing. I've been using these for ages, and not many people know about these, or in fact - where to purchase them from. I purchased mine from Superdrugs, and they were under £2.
All you simply have to do is dip the pointed area in some Bioderma (any eye-makeup remover would do) and then use it to correct your winged liner.
I think they're a really good investment if you want to achieve a sharp winged liner. I always manage to get one side more winged or more sharper (or more blobby) than the other. I also use this to clean up eye-shadow fall out - it's perfect, because it's so small, you don't disturb your make-up that much.
Do you have any make-up tricks to tell? Drop a comment below!