First of all, handmade flowers are usually paper flowers or silk flower. Although there is no fragrance of flowers, it is bright in color and can be preserved for a long time, so it is also beautiful. More importantly, you spent a lot of time preparing and making gifts for teachers, and paid a lot of labor and sweat. This is very rare. The so-called gift of goose feather is light and affectionate, not to mention that what you give is not a trivial matter, and you should be able to express your respect and love for the teacher.
On the other hand, besides handmade flowers, you can also wrap them in colorful wrapping paper, and then put a teacher's day card in it, which not only expresses your thoughts, but also lets the teacher know your thoughts and energy. I believe that if you do this, the teacher will be very happy and gratified.
Finally, different flowers have different meanings. You can send peonies, dahlias and lotus flowers. These flowers are auspicious and beautiful, but chrysanthemums are a bit special. In our tradition, sending chrysanthemums means remembering the dead, so don't send such flowers. Everything else is fine.
Good luck, please accept it if you are satisfied.