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.
It is not always a good idea to hire professionals but the expert's fee can be one important thing that needs to be well analyzed. In case of silk flower arrangements for big occasions and places like hotel, lobby it is always a wise decision to hire experts for impressive floral designs and silk flower arrangements.