well, just a little critic. For the italians I think this is not the right banner. That is the one of Italian Navy with the coat of arms of Venice, Pisa, Genoa and Amalfi, the four maritime republics. So nothing to do with the entire Italy at all.
I suggest to use the iron crown of the lombard kingdom of Italy (regnum totius Italie), the lombards under their king Aistulf conquered almost all the peninsula with the exception of Rome, under Frankish protection.
So basically the italian tricolore with the iron crown from wikipedia, this one: