The tattoo can be fixed but you need to let it completely heal first. I would give it around 4-6 weeks before you get any rework done.
If you use white highlighting it will help with the shadowing.
My advice is get the linework and colouring shading redone so there is a bit more shadowing and texture to the veins in the leaf.
You could also consider adding a hint of colour that spreads out along the flesh of the leaf to give it more definition.
The only difference between a person with tattoos, and a person without is this. The person with tattoos does not care if you do not have any.