Grammar check please?

Hi,

Could you please check for me if I have made any mistakes in these sentences?

Thanks for your [ consideration / understanding ]. (Both mean pretty much the same?)

The cost is no my consideration. (Means I don't mind or care at all)

Can you give me an advanced notice if the meeting [ changes / has changed ]. (Which one sounds better to you?)

All he does is [ criticizing / criticism ]. (Both are correct here?)

Cheers