You have all the time to rearrange or polish your flower arrangement. The flower design should look beautiful and artistic enough before you place your filler, when the filler is already placed, it would be harder to move your things around the area or place. Bear in mind that The filler are very fragile.
You can also make a huge wonderful bouquet for the dining table. Add candles around it or even inside it to give a stunning look. Small flowers can also be used to make outside decorations on a candle, even dried flowers look so beautiful and soothing to the eyes. You just have to dry some flowers, glue them on a transparent sheet and then wrap the sheet around candles. Flowers can also make wonderful Christmas gifts. Another idea is to use flower decorations on the place around the tree and a few paces in front of it.