Greetings, I do hope this finds you well. A very close person (RedWillowBear) to me that I have chosen to mentor made a suggestion and I like it so much I am going to do it, that is use the journal section for BDSM tips for both Doms and subs.
During bondage scenes, it is the duty of the Master/Mistress to take care of the submissive. It’s your responsibility to watch for any breathing problems or signs of circulation problems.  Watch not only for lack of breathing but for lack of hyperventilation.
Make sure you can remove the ropes fast and have bandage scissors available to assist you in cutting the ropes, if necessary.  Practice tying and untying the knots you are going to use.
Never use rope of a smaller diameter than ¼ inch and for safety reasons never use ropes smaller and 3/8 inch without practice.
Never obstruct the throat with a rope by crossing a rope across the front of the neck. Figure out how to make the rope cross on the backside of the neck.  Never tie a rope around the neck.
Take care for strain on joints (wrists, knees, back, neck, elbows, shoulders, etc.)
Watch out for constriction of nerves and blood vessels.  Watch for signs of tingling, numbness, abnormal color, or coldness in extremities.
Never leave the submissive in bondage alone and unguarded. Check the ropes as you are tying for tightness. Always leave it loose enough to get one finger between the rope and the slave's skin.  Check ropes often to insure they don’t tighten because of body swelling or twisting.
Communicate with the bound submissive from time to time and insure she is O.K.  Use a safe signal to allow her to alert you of a problem.
With more coils of rope used around the body or extremities there is less chance of cutting off circulation because there is more surface area used.
Limbs fall asleep in two ways, lack of blood circulation and pinching nerve paths.  Be aware of both ways.
If you use a gag on the submissive, your responsibility for observing increases.  Remember, the risk always increases with a gag.