Kitchen top shelves - uneven ceiling

[RookieTony]

Dear Forum Members,

I am planning to install additional MDF shelves on top of the existing kitchen cabinets, and I have noticed that my ceiling is uneven:

The existing cabinet is installed correctly - I've checked the top of it with spirit level meter. Therefore I 'blame' the ceiling.

I've never done anything like this before and I am curious about my options: what can I do apart from using the smallest measurement (320 mm) to be the height of the new row of top cabinets?

Thank you in advance!

 

[Deleted member 174758]

Keep the shelves level - otherwise fluids will run off, bottles can roll off, etc - and it will look odd compared to the cupboard

 

[^woody^]

Were the cabinet handles fitted to match the ceiling?