the thing with PoT it takes LOTTA work!
i think my hand developed a few new muscles while learning portrait...

the harmonics you mean just after the C note are B(4th fret G string) and D(5th fret D string) btw.
my advice: when you hit the B, slide onto the C. I use my middle and ring finger to hit the harmoncs B & D at the same, then use my index, while still holding the C to hit the 3rd fret hormonic (A', its right on the fret).
hope this helps, PM me if you need more help so i can help ya out asap...
