Yes, that's exactly the one I wanted to avoid. The tattoo doesn't appear like that on her arm.
Here, I just did this. But hear me out, don't take this "too" literal. I simply cropped it out of a coloring book image of Nami and filled it with the color that is used on the tat in official game art of Nami. I had to make the left middle fin, I simply copied the right one and flipped it.