Ready? This may be the world's easiest tutorial. Knit can be hard to sew, and for many a project I wanted to know how I could just finish an edge simply. HOW DO YOU HEM KNIT?!?! Of course this is the simplest solution ever, but it was a revelation to me.

1 Fold it under. I don't iron, I don't pin. I just simply fold it under.

2. Then, setting my machine to an overlock stitch, I align my presser foot up with the edge of the fabric.

*NOTE!!! I usually use a my STRETCH twin needle to hem the bottom and sleeves of my t-shirts nowadays. It looks more professional looking. I've also found that using a strip of soft knit interfacing along the edge can really help stablize the fabric, and reduce any slipping or rippling. I found mine at my local fabric store, but something like Sof' Knit from HTC.

3. Then I sew, securing that folded edge down. Make sure to keep your fabric in place, as it has a tendency to slide unfolded. Uhh, maybe pinning would help with that..

4. When you use a coordinating color, this gives you clothes a nice finished edge.

Good luck!