We all see things differently, but I would remove both the fake florals and the candle on the right, leaving the plate and the two candles to the left as they are, in a grouping of 3;)

I agree and is it possible to raise the round plate a little? That way the space above won't look so empty

Agree with happyleg. Remove the small floral and group the three candles on the left side of the mantel. All done! :) That way, it won't look like too much space above for you, as there will be space below (which is a good thing) as well.

If you do raise the plate( you don't need to) put a matchinf board under it.

Yes I would've said remove all floral, still do the grouping( they're alike) I just thought she wanted some floral.

i think the plate would work better if u hang it above mantel, cause right now u have too much empty space above it.

ok, it looks good, but there is something wrong. After review comments, i found these candle sticks, decor stuff are asymmetric. But i do think it looks ok. maybe get some natural wood stuff. Country chic

I would remove the flowers, group the candles on one side of the mantle and add an airplant on the other side:

I agree with remove the florals. Put the two pots together on one side with birch sticks in the shorter one. Put the three candles together on the opposite side. Done

Maybe the sticks in the taller one. Play with it

Hang the plate. Consider a wonderful natural grasscloth (either real or vinyl) on the wall behind the mantle), paint in a slightly darker shade or a bold contrasting shade would be great too.
Please ditch the florals and consider asymmetrical arrangements, perhaps one on the right only. Look into some sleek sconces for each side to hang mid way to break up the space also.
Peace,
Karen & Joseph

Review it today again, i have to say i love it. No need to change anything, it is just perfect.

Maybe remove the smallest candlestick.