Apply a coat of clear mascara to lashes before using your colored mascara. This really helps to extend and separate lashes before you even start and really helps thicken sparse lashes. 
Whenever I want to achieve an extra dramatic look,  all I do is take the mascara wand and tilt it      outward as I apply so that my lashes slant out, creating a "fringe" effect. It's just a little trick, but it makes a big difference for me.Lastly, while black and brown mascara are versatile options, color mascara is an excellent choice for those who love experimentation and funky eye makeup looks. Colored mascara will perk up your overall style. So, don’t be afraid to use them and get ready to bring some spice in 
your makeup and in your life!