Any tips on starting IVs in pediatrics?

Lots of practice, having a good holder, parent distraction/comfort for the kiddo, utilizing Child Life (cannot do my job without them, they are LIFE SAVERS), distraction, having appropriate comfort and pain measures, exploring all of their potential IV sites before landing on one to choose, reassuring the parents, taping them down well and preventing them from pulling on them, letting the kiddo see and touch everything beforehand and use their words (ie: the tourniquet is "a super stretchy rubber band that helps me find the best blue line so we can put a medicine straw in, isn't it kind of silly that your blue line is going to drink for you?" and let them touch an IV catheter to remind them that it is a bendy straw (obvi use a different one and toss the needle out, I have one tied to my badge, I can also remind them that it is super safe and I have one on me at all times at work), walk them through each step (stretchy rubber band, cold soap (chloroprep or alcohol), pushes with a gloved finger, small pinch, pinch part is out, big bandaid/tapes, arm pillow, remind them that they won't be going home with this). Some of our options for comfort/pain measures and highly encourage those to use to prevent the pain and limit the trauma from being poked, include: J-tip, EMLA or LMX cream to numb the site, vapocoolant cold spray, sucrose, etc. Also highly recommend utilizing a wee sight, vein viewer, snake light, etc to assist. You also need to remain calm and patient, don't just give up, readjust, trust your holder, and don't lie to the kid. I hate when people say "don't cry or it doesn't hurt". Remind them and validate their feelings, "it's okay to cry and scream", "you're right", "you're right to be upset", "this isn't fun", "it hurts", "we wouldn't hurt you on purpose, we want to help you and find out why you don't feel good", "you're going to get snuggles from momma or dad right after this". Remind the parents that kids don't like to be held down and half of the screaming/crying is from being swaddled or held down. I love peds and peds IVs if you can't tell lol, please reach out if you need anything or want any more tips :)