Applying eye makeup can be a hard technique to master. Not all looks suit everyone and a lot of it depends on your eye colour as well as your eye shape. If you have been doing your make up the same way for years, why not try and experiment with it. The best time to do this is in an evening when you do not have to go out anywhere. Remove all of your current make up and then just a few different styles to see which suits you.
If you need some guidance, then there are some great videos on YouTube that will show you step by step how to master the techniques and also images / videos which will show you how to apply eye make-up dependant on your eye shape.
If you visit a makeup artist, do not be afraid to ask them to talk you through step by step what they are doing so you can re-create the look at home.