Those balloons will be as deflated and saggy as my tits by Christmas Eve.
The tree is the wrong size, too small. It'd work if he put it on something, but the scale of it is wrong. Tree then mirror then balloons in a row, well that just looks bizarre. If you absolutely must, balloon arch separate, mirror doesn't go in any scenario. The candy cane stuff has a lot of white, he needed to add in more red, cos as he has so much grey, the overall effect is cooooooold. Too much decorations is like the nutcases who have a million creepy dolls displayed, or royal memorabilia, it's putting odd stuff in the place your personality and life should be.