Shaky hands during a presentation mean you care. Hold the note cards tighter and keep going.

Nerves are not a verdict on your readiness. The body treats something that matters much like something dangerous, which is why the shaking tends to appear precisely when you have prepared and want it to go well. It is uncomfortable, and it is not information about whether you should be up there.

Expect the shaking rather than trying to prevent it, and give your hands something to hold. Speak a little slower than feels natural for the first minute, since that is when it peaks. Nobody in the room can see what you are feeling nearly as clearly as you can.