Looking for hair dye? We've got you covered.

So, last week I dyed my hair black/grey. It didn’t turn out the way I wanted it to, it’s pretty dull. It also came out spotty but I’m sure that was more user error. to get it “darker” or more deep in color what should I do? The first picture is how it turned out, the second is what I want. Since it’s already so close to the colors I want, will it be an easy fix?