1. Before arranging flower, prepare in advance the materials (such as flowers, foliage, wire, ribbon etc), containers and tools (such as scissors, cutter, pliers/tongs, glue gun etc). Place them all near the table where you work so that you do not go back and forth when going to use it. It’s really time saving especially when you do not have any assistant to help.
2. Make sure the oasis being used is really wet. Soak a few hours before and check whether its center has absorbed the water completely. If not, then the flowers you are using will certainly wilt soon so that you are doing in vain.
Note: it would be better if you soak the oasis overnight and do not push it into the water but let it absorb the water slowly till it sinks by itself.