@ChristopherT
I'm pretty sure Mr. Hwang wasn't looking for a "nut up or shut up" response. Small hands are a legitimate issue that he clearly wants to work through. Otherwise, he would not be asking for help. So, let's show him a little support and encouragement while he overcomes his personal barrier with some
helpful information.
Magic is a tough craft, which I believe only truly exists in live performance. That means there will be times when you bomb and the only thing that will keep you going is your own drive to keep creating.
Even when you have a supportive community, friends and family who encourage you - You are the one that is responsible for learning your craft. You are the one that has to practice and rehearse and hone your skills and your performances. No one else can do this for you.
As soon as someone starts saying, "My hands are too small for this" or "I can't do a trick that isn't bullet proof" they start to restrict themselves. They start to limit what they can do, which means they will not achieve what they could have before hand.
You can look at my response as mean - or motivational. Mahdi Gilbert is an inspiration to me. I have small hands too, but I specialized in cards for over two years and I learned how to use the moves, and I stretched and strengthened my hands. It took time, it took practice, and it took literal blood and sweat. When I learned how to do the one-handed shuffle, I rubbed the side of my finger raw practicing. Same thing with the one-handed Erdnase Shift. I don't even use those in performance.
So the most helpful answer to the original question is, as you delicately put it, "nut up or shut up". Practice. Practice more. Practice until you get it right. Then practice until you can't get it wrong. Then practice until you don't even notice you're doing it.