Yeah, you know not everyone is born with the perfect face, including the eyes. As well, sometimes the eyes are too big(round), which will make us less beautiful. However, you know everything is possible and you can try some ways to make your eyes less round. Thankfully we live in a day where makeup can help you realize your dream. Here I list a few simple ways and techniques using eye shadow & eyeliner to create several illusions based on your needs. At first, you should sweep a light shadow over the whole eye area. Then you can dust a medium color on the surface of the inner half of the eyelid; at last, blending outward to create a natural finish. The last step is that lining from the inner corner of the eye to the middle & then blend outward. These techniques really works, and I have used many times. Hope it can help you also.
If you want to make the eyes look a little big square, you can just achieve this through the visual aspect. You can use the colored contact lenses to decorate your round eyes. You may base on your original color of eyes to choose the charming colored contact lenses to make the eye shape and color look more attractive.
I think your eyes are very pretty!You can use a black eyeliner on your waterline.This instantly makes eyes look smaller. It will give you the apperance of longer eyes which is what you desire. Start drawing a line from the center of the top eyelid and out to the outer part of the eyelid. Smudge the eyeliner at the outer corner of your eye slightly so it is not just a solid line.Draw the eyeliner along the lower lid (on the eyelash line) now, starting in the middle and working your way toward the outer part of the eyelid.Gently brush a dry cotton swab over the eyeliner on the lower lid to smudge the color--this way it will blend in more naturally with the lower eyelashes.