I was tempted to copy Week 3's challenge (Artistic Red) and do another macro water droplet on a blue petal. That didn't really push creativity, so I stuck with the water theme and shot a water drop. 

Not much of a technique to this one, I filled a sauce pan with water and dropped water into it! I made sure the dropper was at a fixed position above the pan, so I set the focus point on where it lands and had one less thing to worry about. Without a flash this scene was all black, so it was entirely lit with a bare flash on a blue card. I put a macro tube onto a 50mm lens for this, I found the 105mm dedicated macro to be too "extreme". That was it, apart from a boat load of patience and (if shooting film) money. Thankfully the digital era allows us to make loads of mistakes to help learn. Also, you get some pretty funky looking throw-aways!