I agree about #4, there's also chrome by her wrist, and near her shoulder - that creates shapes that are noticeable and visually distracting. I learned to go for a 'clean' background meaning no things sticking up into the picture especially if they're high contrast in light and dark (move around, change the vantage point, and/or move the subject).
I love love love the use of the arc of the lamp against the stripes, I'd just have moved those pillows and maybe the chair lower left. If something doesn't frame the subject or work in the shot, then it probably needs to be out of the frame. In one the light is catching the seams in the lace (I couldn't tell at first what the dark lines were) so maybe that angle could have been adjusted.
I don't know in the next one what that lettering is but it needs to either be in the picture and readable or kept out of the frame. I'd think about the black pillow and the board under her, should it be under her or moved or positioned differently? Probably the kind of thing to think about how to use it or how it looks arranged best.