Another quick way is to use your 1/4 inch foot. Make a seam with wrong sides together. Press the seam by folding the fabric back on itself, making the seam inside of the fold. You will have the right side of the fabric on the inside now and the wrong side will be on the outside. Make a second seam just larger than the 1/4 inch seam, about 3/8 inch to 4/8 or 1/2. Then open the fabric and press the seam. The seam will be on the inside, on the wrong side of the fabric and completely inclosed. If your pattern gives you the option, it is easier to use a serged seam on a serger. However, the french seam is considered the most professional of all seams.