Make it easy for yourself to get through security. To get through the line quickly, make sure you have your check in luggage prepared.
Put all liquids (no more than 3.4 ounces each bottle) in a quart sized zip lock bag and have it somewhere easily accessible that you can just take them out quickly.
Wear shoes that are easy to take on and off and try not to wear a belt if you don’t have to as you will have to take that off too.
Jewelry should not be a concern except for watches. I’ve personally never had any problems with my earrings, necklace and body jewelry.
Take your laptop out and jacket off while waiting in line (your tablet is OK to stay inside although some countries may require you to take it out)
Empty your pockets of your cell phone, bills and coins while walking through the metal detectors or full body scans. Don’t even walk through with your passport or boarding ticket.