Flowers are so darn expensive these days if you use a florist. And they don't always have what you want. I should know, I owned a florist for over a decade.
But think, if you can draw flowers, then you will never run out of possibilties for birthdays, anniversaries and sweet notes.
In love with someone...draw a red rose.
Some lost a dear friend....draw a bouquet of carnations, daisies and roses.
Friendship...draw a yellow rose, a yellow daisy.
How To Draw Flowers is a series of different flowers with step by-step instructions. This video is a daffodil tutorial