These are nice but I'm bothered by the background in both.
#1 - The pattern of the sheets as well as the wooden slats in the background is distracting from a nice capture of a pretty lady. The gray spread looks turned down to expose the sheets. I think you could have not turned it down and provided a nice contrast between the gray spread and the pink top she's wearing. Shallower DOF would have eliminated the background distration if that was an option (I don't know what aperature you shot this at)>
#2 - There is something whitish growing out of the top left of her head which is distracting. Also, there are quite a few hot spots or blown out areas from the forearm to the face which a diffuser of some type would have helped. I'm also seeing a green tint on my monitor (at work, not calibrated). Did you use a flash/strobe or tungsten lighting?
Hope these comments help on the next effort.
Re: Christelda #5 & 6.