I need help with my concealer!!?

I bought physicians form. twin concealer. One side is green the other is light (they didny have anyother consealer shade only light will it work if i have slightly tan skin?). Well i tried puting it on and it look like im growing gr under my eyes any tips?a href="http://www.cvs.com/CVSApp/cvs/gateway/detail?prodid=205384&previousURI=/CVSApp/cvs/gateway/search?ActiveCat=499^Query=concealer" rel="nofollow"http://www.cvs.com/CVSApp/cvs/gateway/de…/a