Continuing our altar flower tutorial, you'll need to make a couple of cuts trimming the florist foam to a usable size before you begin to green in your design.
Using a flat bladed knife, cut the foam a couple of inches above the rim the the urn container.
I like using a great deal of foam for this type of design. Remember - the foam holds the necessary water to feed your flowers and keep them fresh. The more foam you have, the longer the flowers will last.
Using the top portion you cut off the brick, make a diagonal cut into the left over piece, creating two wedge pieces.
Place the wedges on both sides of the brick still remaining in the urn.
Push down firmly, so that the sides of the foam is packed against the standing brick. You don't want any air pockets that may leave a stem of a flower in empty air space.
Don't be afraid to pack it down firmly, filling the sides of the container. You don't want to crush the brick - but you do want to be sure that the container is filled with foam.
Do the same on the other side of the brick with the remaining Oasis foam wedge.
Pack it firmly into the side like you did with the first piece.
Here's a top view of the complete bricking in of the florist urn.