Whoa These are the best flower shots I have ever seen. My favorites are nr 2, 7 and 8. Extremely good shots especially if they are made with PS S1 IS! That's awsome... I really like the DOF of nr 7, what are the shot parameters? (f nr, shutter, iso?)
You really take us onto a trip INTO that passiflora... wow! That one looks like a world of its own.
I also like the square crop of the dahlia photo, and the droplets on the last.