Combine cheeses and 1 cup sugar in your mixer's bowl; mix until creamy and smooth, about 4 to 5 minutes.
Add Frangelico and continue to mix just until combined.
In a separate mixing bowl, combine chilled heavy cream and 1 tablespoon sugar; beat heavy cream until it just holds stiff peaks.
Fold the whipped cream into the mascarpone mixture until combined.
Spread about 1/4-cup of the mascarpone mixture on the bottom of a 9x13 glass baking dish. This is just to hold the ladyfingers in place.
Layer half of the ladyfingers over the mixture.
Generously brush the ladyfingers with half of the espresso/coffee; let stand 5 minutes.
Take half of the prepared mascarpone mixture and spread it over the ladyfingers.
Top with chocolate shavings.
Layer the remaining ladyfingers.
Generously brush the ladyfingers with half of the espresso/coffee; let stand 5 minutes.
Spread remaining mascarpone mixture over the ladyfingers.
Position the blueberries in the top left corner of the tiramisu to form the blue portion of the flag.
Arrange the sliced strawberries in horizontal lines across the tiramisu, leaving about 1 inch between each row, to form the stripes.
Place in the fridge for at least 4 hours, overnight is best.
Slice and serve.