Hmm....can you tell us what you were going for?
For example, in #1, does it have to be water? What is the idea you want to show? If it's cleanliness or purity and you need the drop to be clear, I'll think of some ways you could light it up and show it more. First off the top of my head is that maybe a BLACK, not white, backdrop would help fill the droplet with color. Then in PS you can make the black backdrop white, but leave the droplet alone. Or....you could dye it and it would show up more.You know, just dip your finger in some food-colored water instead of plain clear water. But I have to say the lighting on the hand is great. It's just so hard to get the hand right and then try to get the drop looking right simultaneously. Hey, maybe now's the time to try a double shot...what are they called....expose the hand right, then expose the drop right, and merge them together in PS.
For #2, is the writer a ghost? A figment of the imagination? A fleeting thought? Try shooting it in two exposures, one with the backdrop and one with the hand and pen against pure white. Then you can clip it out, make it a new layer in Photoshop, and experiment with different layer blending modes to give more dimensionality to it. Right now it just looks like it has a 50% opacity. But you can do much more with layers. I also would experiment with different angles on that notebook...perhaps a lower, foreshortened angle would be more dramatic. Perhaps also some harsher, higher-contrast lighting on the hand or the whole scene in general. Is the hand yours? Try using a model instead to get some different angles, or keep using your own hand but put the camera on self-timer and experiment with different hand poses.

um, that's all I can think of at the moment, but I like the concepts, I like where they're going. Keep trying!
