tip about using slices

Hi, i’m doing a thesis and i’ studying a micro-sampling of petrous bones. I would like to showcase the sampling compared to the cochlea but i don’t know how to do. Is there someone who can help me?

In the picture there is the cochlea on the left and there is the sampling on the right (where is the pink line). With the micro-sampling i I should have arrived near the cochlea but it didn’t. So i would like to show this