Trixie you want to use half as much triple sec as tequila.
In fact.. just barely use ANY triple sec at all.. IMHO it wrecks a good margarita.
Also.. dont use ANY kool aid type LemonLime powdered stuff as also they wreck a good margarita.
When I tended bar, I used 1 to 1.5 ounces of VERY GOOD tequila.
.0-.05 ounce of Grand Marnier
Juice from 1.5 lemons sliced and squeezed and 3 limes sliced and squeezed per each drink.
Frozen or on the rocks this will make a VERY GOOD Margarita.