There is a traditional method for tying this knot one handed where the wrist becomes captured in a loop. If you're ever in a situation where capturing your wrist may be concern, try this new approach as an alternative. I like how the fingers can more readily slip away if needed. However, capturing body parts is tricky anytime that rope becomes suddenly loaded.
There's the big rope tying principle at work here. The key to knot tying is the opening hold. For some reason, I picked up the rope as shown below on my first try. I have stayed with that hold ever since: it flows nicely.
From this position, the hand is folded. The small finger points out - behind the up rope. Everything for a reason.
The end of the rope will now progress counter clock-wise around the rope. This positions the end of the rope to reeve through the small loop on the three fingers. To start the rotation in the correct direction change the position of the end of the rope. Take it from the front-side to the backside - as illustrated above. Then keep wrapping it around. That's a counter clockwise motion.
In the above picture, the end of the rope is laying across the loop. It's worked down into the loop as the next step. It arrives at the image below.
The final view will help clarify how the end of the rope wraps around counter clockwise and reeves through the small loop.
The Youtube version will provide the flow of it.
Practice it. Enjoy it.
The photos that follow will be the essential stages minus the hand. The purpose is to help you visualize the knot.