|I've noticed many students have dangling threads through out their garments which looks, well, ugly.
Make it a practice to cut each one as you approach it. Use small scissors or better yet, snippers to this. It is a pain but I have found that it is easier to do as you go rather than having to do it all at the end and inevitably, miss a few.
I prefer this method when I sew that last stitch as I like it to be over and not have to spend more time going back over the garment to snip each thread.
I'm always looking for little things (like this) to make sewing easier.