When you're mixing the ingredients, make sure not to overmix them as doing this can result in a tough, dense texture. Also, when you are shaping the loaf in the loaf pan, make sure not to press it all together too much because you will need to cook it for a longer amount of time which can dry out your meatloaf. A food thermometer will help to determine when the meatloaf is fully cooked. The internal temperature should be roughly 165ºF.