Well, I think your application is very nice
About taking the pics. I have heard that a camera that has a light that is above you is best but those cost BANK!! Our Dear Jude has a great camera you might want to ask her what she has.
I have the same problem as you, mine washes out the color or shows it not as blended. I can't even take pics of my lighter eye applications they never come out right. I have been been told by several great picture takers to put a index card or paper over the flash and that does help a little bit. I also try to take my pics in a very dark room. For some reason they turn out a bit better that way.
I dished out Major cash for camera so I know how it feels. I am looking to get a new one but that won't be for sometime. This next time I am going to go to the store and play around with them more.