I always recommend using a double thread, even if the stitch doesn’t need to be strong. The thread snapping halfway through your work is frustrating and time consuming and we just don’t want that. I personally also find it easier to tie a knot on a double thread than a single one.
Take a length of thread more than you think you need. I would recommend making your thread at least twice as long as the stitch you’re going to sew; you always want to have some thread left over at the end of your stitch.
At the end you’ll have to tie a knot to prevent the stitch from getting loose again, and that is very difficult if you have only a tiny bit of thread left.
Pull the thread through the needle and grab both ends.
Tie a basic knot and pull tight. Make another 4-5 knots on top of your first knot, make sure all your knots are in the exact same spot!
This will create one, bigger knot instead of a series of smaller knots.
This knot will be your starting point, and will make sure your stitch stays in its place. Finally, cut the leftover thread after the knot, and you can start to sew!
