When viewing the default USA skin from the right, the flag is shown with the field of stars on the left-hand side, which is correct for 99% of cases. However, it is improper when you have it on the right side of a vehicle or uniform. In such cases, the field of stars are supposed to be on the right-hand side.
See here for more details:
https://www.caranddriver.com/shopping-advice/g28229171/american-flag-etiquette-cars-motorcycles/: (https://caranddriver.com/shopping-advice/g28229171/american-flag-etiquette-cars-motorcycles)
> The flag should be displayed with the stars in the upper left-hand corner, with an important exception. A flag displayed on the passenger side of a vehicle should show the stars at the upper right-hand corner. Isn't that backward? It is, but the reason is that the field of stars (sometimes called the "union") should always be in the highest position of honor. On a vehicle that moves, that would be closest to the front, as shown in the photo above.