>Items you will need, scissors, iron, ironing board or something to iron on, thread, and a sewing machine. (we will talk about hand sewing a hem in a different post)
>Okay first take your garment and turn it wrong side out.
>Take your tape measure and measure up 1 inch and begin ironing this amount up. Iron all the way around the garment. If you are good at eyeballing you don't have to keep measuring as you iron but if you are new to this process I recommend that you keep your tape measure handy and frequently check your ironing to make sure that your hem is not loosing or gaining inches.
>After you have gone completely around your garment ironing up1 inch, you are going to start the process again on the raw edge of the garment. The raw edge is considered the top edge of the 1 inch you just ironed up. Begin by measuring 1/4" and turning that under. You are again going to iron this piece so you have a nice neat hem. Do this all the way around your garment. Or you could practice all these steps on a scrap piece of material.
>Now we sew! If you are sewing on a pair of pants or shorts I recommend if your machine has a removable compartment in the front of your machine, remove this your pants will fit much better without this. For a skirt and most other garments you can leave this piece in place. You want to sew as close as you can to the top folded in and ironed edge. But make sure you go down enough to ensure that you stay on the hem.
>Start sewing the hem by going forward a small amount then backtracking and going forward again. This will ensure that your hem has a nice solid start. Go slowly and try to stay in a straight line sew completely around your hem. At the end of the hem backtrack once again. Now your hem is finished.