If you prefer a sweeter drink, feel free to add sugar to taste. This addition will enhance the sweetness without overpowering the refreshing lime flavor.
Be mindful not to overmix the drink in the blender; 30 seconds is all you need for the best result. Otherwise, overmixing can make the lemonade bitter.
If you like, you can peel the lime skin before blending, or alternatively, use half lemons and half limes for a slightly different flavor and a larger quantity of juice.