I have the best skin ever full body kit on my iPhone 4 and am very please with it.
You don't need the spray bottle really. Just get a shallow dish, put 1 drop of soap into it, add small amount of warm water and use your finger to mix it up a bit. Don't need to be a lot of water... just enough so u can dip the film fully under. I applied my kit after a shower in the bathroom where it's high moisture in the air, which reduces lint and dust flying around. Wiped my iphone surface with a micro fiber cloth(glasses comes with these) before every piece application. Dip my fingers into the water, peeled the film, dip the film fully into the water. Lift the film out and touch the corner of the film to the micro fiber cloth--this helps soak out the dripping wet water... leaving a mildly wet film.(wait a bit for the water to "drain" to the tip where u touch to the cloth to soak out the water) Apply to iPhone surface. Use credit card to squeeze out the water. Film might slide around, so hold down one end with thumb. Use same micro cloth to soak up the excess water. Squeeze out any air bubble. Film should be moist, but not wet at this point. Align film to perfect location. Wait for it to set before applying new piece.
This is exactly what I did and I have it very well aligned with zero bubbles.
On a trivial note... I had accidentally set my phone onto a piece of packing clear scotch tape... yea, the super sticky kind. When I removed the tape, it nearly took the BSE back skin with it! It was peeled a bit off my phone and a bit stretched. Simply smooth it back out and use a credit card to squeeze out the bubbles. This is all dry, too. It went back to being smooth as if nothing happened.