If you want to make your hazel eyes look more brown, you could try to wear the brown colored contact lenses which could let you get this. Your eyes will look so charming and brown. In addition, your eyes will look big and shining. That is why a lot of people wear the contact lenses for the looks. You could have a try.
Well, according to your description, you are not very satisfied with your current eye color right? So, yes indeed, there are some ways to could do to achieve what you want. Here what I recommend is trying to get some contact lenses with brown color, which could make your eyes more charming, because there are simply no natural ways to change your eye color ok? Anyway, I think hazel eyes are just attractive.