Leaving Aaron's palazzo, Villanelle wears high heeled shoes. When exiting the tunnel, Villanelle is seen wearing flat shoes. A moment later in the ruins, she is wearing high heeled shoes again.
When Eve is talking to Danny she folds the note then places her hands on top, scrunching it up, and in the next scene she is holding the note in her hands and it's not scrunched.
When Villanelle fires the pistol, the slide does not push back and no cartridge is ejected. There is no recoil either.
Last scenes: after entering building in Rome center heroines soon found exit at Villa Adriana in Tivoli (about 30 km from Rome).