karmaplace wrote: If you layered some greenery at the bottom, it would help fill up the space at the opening of the vase. Many times, cellophane wrapped roses comes with some fern that you can use. But any broad leaf greenery will do. I like to use nephthytis (arrowhead vine) because it's so easy to grow...like ivy. I took the flowers out to show you nephthytis and how I layered it to enclose the space. Will be back to comment on your arrangement.
Edit to add: filling up the opening of any vase helps to hold the flower where you want it instead of flopping forward.