This mani definitely took some time, patience, and a very steady hand. I used Sinful Colors Happy Endings as the base green color and a mixture of other brands, including Essie, for the accents.
Basically, I just took a small nail art brush and carefully drew on the masks and Master Splinter's head and ears. I applied a top coat of HK Girl to seal in the first step. Next, I used the smaller side of my dotting tool to make the whites of the eyes. I then applied another top coat. Finally, I used the same small dotting tool but applied the smallest amount of polish possible for the black eyeballs. And then more top coat :)
Now if only I could do this on both hands! My left hand can barely paint my right.