i like the 2nd pic, all black frames, and make the photos similar in format. or just get a nice canvas art piece.

I like the way you have it set up,,,maybe leave it blank or bring in a single, taller item. the clock and blue thing are both too short and really don't relate well.

(hard to tell because we really can't see the entire room for perspective)

The scale is too small for everything. Nothing smaller than a basketball should be there. Small dainty things like that belong on a bedside table.

Too busy. Looks like you just dropped them there for a moment and forgot about them.