Go to a Domme that lists this as a specialty, not one that'll just say yes to doing it.

Tell your Domme if you have any surgeries, metal in you, pacemaker, etc. This seems obvious but people have forgot with me before.

If a Domme puts a sticky pad anywhere on or near your nipples, immediately ask to avoid that area. Yes, some people will say there are "safe" ways to do this but... I would just hard limit it to be safe. Wands and other objects are fine by the nipples, pads that stick arent.

Sometimes it can hurt and your jerk-reaction is to pull a sticky pad off-- do not do that. Do not remove a pad without permission.

No issue with combining TD. The only play I avoid with electro off the top of my head is tight shibari.

This is the most common sticky pad used, so you know what they can look like:
https://www.amazon.com/KS-Premium-Electr...235&sr=8-18