Amounts used for sauce are approximations because you only need enough to lightly coat the lettuce and hold the additional ingredients in. Too much sauce, and you’ll have a soggy mess. Not enough, and you’ll have a wrap fall apart at the seams. I also approximate the mix-ins based on the size of the leaf lettuce. Your wrap made need more or fewer slices of tomato and onion, for example, than mine do. And as for those sauces, check the bulleted list in the post for inspiration!