so My tattoo finally healed and looks great. I just have one concern. So I have small negative space in my tattoo and I am currently cutting (losing weight to lower body fat percentage). If I lose like 20+ lbs will that make my tattoo shrink which will make the negative space non-existant?

Also, if I lift enough to gain weight will that stretch the tattoo out to make the negative space much larger than intended?

one last question. In the future, when the black fades and the tattoo needs a retouching. Can white ink be added over the tattoo to give the illusion on negative space?