Add the ice, triple sec, tequila, and lime juice to the glass. Top it up with the mango nectar.
Enjoy drink immediately.
I used Maldon sea salt flakes to rim the glasses in the photos. You could also use specialty margarita rimming salt.
Mango nectar is just mango juice (often sweetened). I found it in the ethnic/international foods aisle of my local grocery store. The cans of mango nectar were 8 ounces each, so I added the whole thing to each glass pictured. You can definitely either use less mango juice or double the alcohol if you want stronger drinks.