I"m not sure what your objective/goal is here - teach something about Spanish culture or do an art lesson? Or both?

Flowers are predominant in Spanish countries like Spain, Mexico, Puerto Rico -

Prepare a lesson in flowers, petals and flower 'centers' where the bees go. This could be a great lesson in science. Show students real or pictures of large flowers like sunflowers. Show students where the seeds are formed in the flower. Ask them why there are different colored flowers? (bees can see them better) - also, like people, there are many different kinds of flowers in the world. (hitting a lot of objectives here - but you can put those in your lesson plan)
Show photos of Spanish cities where color and flowers are predominant. Some of your students may even be Hispanic. Great! Learn the name for flower in Spanish and say it when you point to the "flores." You can even do the colors in Spanish (I had kindergartners who taught ME the colors in Spanish!)
Teacher prep: Cut out circles 6" or so. Not too much larger. Show students the circle and how they can make another circle in the center where the seeds are, with their crayon/marker - and then color in the petals. Use paint if you can, or use markers. (I prefer paint - it covers more territory, but it also covers more of the kid!)
You know best how your classroom works here, so this is just a very very sketchy lesson for you. YOu could follow up with a book about flowers (a reading objective!) - Review with the children where the seeds are in the flower, the name of the colored part of the flower (you could add a stem and leaves too - means a gluing thing in addition)
As you can see, this can get very complicated quite easily. But you can also keep it as simple as you want. I like all the objectives that you can put into this - the Hispanic culture, the language, the science lesson about bees, seeds and flower parts, the use of color, the use of paint, the skill of gluing. Don't forget these art objectives too!
Good luck. This could be a fun project! If You are having fun, the kids are having fun too.