Sorry your kindergarten experience sucked.  I got really lucky-they didn't try to make me write differently.  I write like a right handed person, except its with my left hand. 

Keep practicing with your hair, you'll get it!!!

What was really odd, mom had taught me to read and write by the time I was four... She's another ambi/leftie, so she taught me properly. That's why it was so confusing when my teachers told me I was doing it wrong. They also seemed to hate the fact that I could already read. Kept taking my books away during naptime. I didn't need sleep, I needed more stories!
Oddly, Anything musical, I'm better with my right hand.
The typical english braid, I can pull off in no time flat... It's when I try to get complicated, like adding sections that tings go awry. sooner or later I'll get to taking a pic of my horrible french braiding skills.

Augh! I KNOW! My hair is impossible, so I always end up with a simple three strand-braid. It's so boring.   But after reading this I've decided I'm going to learn how to french-braid anyway. Good thing I'm stubborn...  

Congrats on completing your first french braid!  Keep practicing and your arms will get used to being help up (and you will get faster at it!).