Help me save my new clutch :D

[Lordblood]

So I have a new clutch and I feel I am pretty good with driving stick now.
But since it is new, and since I did pay quite a bit for it, I want to keep it as long as possible. So, since I'm sure many here are quite experienced at driving stick maybe I can get some pointers .

First off, launching. I usually give it a bit of gas and hold the clutch at the biting point for about 1-2 seconds before I let go. Is this correct? Should I add more gas and come off the clutch pedal gradually without stopping?

Next is upshifting, my shifts are usually smooth and I tend to shortshift up at 3-4k RPMs. Sometimes though I get a jerk in the shifts, is this bad? Should I rather let the clutch out slower, perhaps holding at the biting point longer?

Lastly, hard starts. What is the ideal RPM for a Boxster for a hard launch (I realize it depends on tires, but an estimate would be nice). Do I come up off the clutch pedal fast? Smoothly? Slowly?

Thanks for the help everyone .