Greenboy

Hi all,I've come to you guys to see if you can help with ideas/ inspiration on part of my half sleeve tattoo! I have a half sleeve which finishes off just above the elbow. I'm really happy with the inside, but would like some advice on the outside part of my arm. I have a pocket compass which is partly tucked away under a wing. Somehow, to me, it doesn't seem finished off and it really plays on my mind! From the front, it looks fine, its just from the back and base I have the prob with. Any ideas on how to break up the rear, darker rim? BTW, I have a rose and leaves round the rear/ inside of my arm.