I think maybe you should invest in getting a medicine cabinet with built in shelves instead Bcz seperated cabinets might look awkward and overcrowded.
Kinda like this:
:) Also Ik u didn’t ask for this but I think u should get a dif color mirror and change it to a color like yellow, orange, same shade of green as the cabinet, white, or off white. The brown mirror is just too dark and contrasting and it distracts from other things in the bathroomjust make things look like seperated and unconnected things.
Hope this helps, Peace