That professional look which some packages have when we open them often lies in the fresh crispness of their tissue. All your gifts can have this look if you line the box with tissue in the following manner. Pleat each of two sheets of paper through the center: one to fit the length of the box and extend beyond it at each end, the other to fit the width.
Fit one sheet into the box, and lay the other across it, allowing the ends to extend equally on both sides.
Now add the gift. If it is fragile, or is to be mailed, gather extra sheets of tissue lengthwise and place them around the object, to keep it from shifting. Finish by folding the extended tissue inside. Write a card with your name, place it on top, and close the box.