I didn't feel really comfortable until I put 30k miles on the odometer, it was my second MT car, 4th MT I've driven and I already had >15k miles and 3 years experience. I think this car is a little more difficult to figure out in daily scenarios than most. Shifts like butter when you're pretending you're a racecar driver on track, but in stop and go traffic? Like @
humfrz said, it's an art, but the kind of art like a well stacked supermarket display: 99% of the world doesn't give a shit, and your coworkers will give you a pat on the back.
Props for giving it a try. Good luck, hope you stick with it.