Hidden in My Heart - Watercolor Activity

Hidden in My Heart Watercolor Painting

Last year, while studying history, we learned of an old painting technique. To recreate it, the book taught us to write with a white crayon and then watercolor over it. 

And who doesn't like a hidden message?!? Boys and girls alike will love this activity. Toddler friendly too!


  • Watercolor paper
  • Watercolors and brush (or cotton ball)
  • Water in a glass
  • White crayon
  • Masking Tape
  • Optional: Cardstock for mounting and double-stick tape


  1. This is optional, but if you want a crisp clean border, mask off the edges with masking tape. You can put this onto a clipboard or straight onto the table. 
  2. Write your hidden message or scripture onto the smoothest side of your watercolor paper with white crayon. Push hard. You can see my uh-oh example of when I didn't push hard enough. 
  3. Now, you can send these off as cards in the mail like I did with instructions to paint over it. That's fun because your recipients get to do the art and discover your message themselves! Include a set of watercolors to be extra cutsie! : )
  4. Or, you can sit down and have at it with your kids! Let them loose with the watercolors. They just wash the paint over and discover the message written in crayon!
  5. Ta-da!!! Let dry and enjoy! You can mount these using double-stick tape to cardstock if desired. 

Scriptures on Hiddenness:

I have hidden your Word in my heart that I might not sin against you. -Psalm 119:11 (Draw hearts too!)
In Christ are hidden all the treasures of wisdom and knowledge. -Colossians 2:3
I will give you hidden treasures, riches stored in secret places, so that you may know that I am the Lord. -Isaiah 45:3
Hide me in the shadow of your wings. -Psalm 91

Notes to Self:

  • Don't try other tapes for your borders. I tried electrical, scotch, and painter's tape. They either ripped up the cardstock backing or they ripped up the watercolor border. 
  • If you didn't push hard enough (like I did the first few times), no worries! There are no mistakes in art! Just write your verse over the top with a pencil or pen. And admire that there's always grace and beauty to be found. This is a good time to demonstrate a cool attitude to your kids when things don't go like we hoped. 


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