book cover ideas for my book/ info on flowers from google. (visual exploration)

I really like the idea of these book covers but I want my book to look homemade like someone made this book documenting and drawing the flowers.
 

A lot of flowers represent things to people but I think I'm going to write in the book about the poisons in the flowers and if they can be used for medicine or cooking.

here are some facts on flowers that have poison or are used in medicine.

some of the flowers didn't have much information on them so I'm going to have a look and see if it is a species of flower type and find the original name of that type of flower. I've had all this information stored on my phone checking to see if it is correct.