Use the "American" method of narrow fabric treatment that is applied when processing thin material. Unscrew the inside out slice 0.7-1 cm and attrocity in the region of the bend of 0.1-0.2 cm, then carefully with scissors trim the seam allowance to the seam. Now tuck half processed edge by another 0.2 cm and re attrocity in the edge next to the stitching you made before. Should be very thin treatment of the slice is fixed by means of two lines. For evenness can put under the fabric when stitching a sheet of paper, he could save the slide, with the result that the stitching will turn out as smooth. After completion of the work on the machine carefully remove the paper from the seam. Typically, this process seam hem.
Use a zigzag if you need to treat the inside seams of the product. To do this, tuck the edge of the fabric inwards by about 1 cm, and then attrocity with the wrong side fold the small and frequent zigzag, then gently trim the excess fabric close to the seam. Use only quality threads, -0 then you will be able to avoid many of the irregularities and other problems. As a result, after this type of treatment, you should get a neat edge, perhaps, a bit wavy. If the edge will remain a thread after the stitching, then go over them with small scissors, cutting close to the line, however, it does not hurt the seam.
Apply the combo option if you do not fit any of the first two. To do this, first treat the seams on the narrow overlock stitching in 2 mm, and then fold the edge to the width of the resulting seam and attrocites on the machine again. The result is a neat smooth edge. To determine which one will suit you more than others, you can try each of the processing methods in action on a small piece of fabric.