Carnation Flower Arrangement Flower Arrangement?

Flower arrangement? - carnation flower arrangement

I want a flower arrangement to my mother for her B-Day Make /. With real flowers. Can I like, and they together? What kind of flower together? I thought of carnations, tulips, roses, maybe. These classes. Color.
Moreover, when I was down and tie down, cut the stems with a rubber band, it seems to clean?
All fresh flowers are all the same? Approximately 1 1 / 2 inches diagonally from below?