• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer
  • Crafts
  • Holiday
    • Valentine’s Day
    • Easter
    • Mother’s Day
    • End of School
    • Father’s Day
    • July 4th
    • Back to School
    • Halloween
    • Thanksgiving
    • Christmas
  • Kids
    • LEGO
    • games
    • coloring pages
    • writing
    • books
  • Planner
    • pages
    • tutorials
  • Recipes
  • Shop
  • One Mama's Daily Drama
One Mama's Daily Drama: organized chaos for year-round family fun since 2009.

One Mama's Daily Drama

Organized Chaos for Year-Round Family Fun

Home » Crafts » Beautiful DIY Birthday Cards

Beautiful DIY Birthday Cards

Make your own DIY birthday cards with watercolors and pens using simple shapes that are easy to personalize.

Handmade watercolor birthday cards with illustrations of a yellow cake, pastel balloons, and a pink wrapped gift.

Disclosure: This blog contains affiliate links. As an Amazon Associate and member of other affiliate programs, Keri Houchin earns a commission from qualifying purchases at no additional cost to you.


If you like to make handmade gifts, add a DIY birthday card to the mix! These cards are simple and cute.

I love designs that are a blend of doodles and watercolor shapes that don’t quite line up. There’s something really fun about coloring outside the lines. If you tend to be a perfectionist, set that aside to make these messy card designs.

How to make a birthday card

Supplies

  • watercolor paper
  • paper trimmer
  • watercolor paint set
  • a cup of water, for painting
  • black and/or white pen
A package of watercolor paper, watercolor paint kit, paper trimmer, and black and white pens.

Instructions

1. Cut the paper.

My paper is 8.5×11 inches, but you can use any size. Start by using the paper trimmer to cut the paper down to the size you want the card to be. I cut mine in half, so each piece of paper is 8.5×5.5 inches. Then fold the paper in half, making a 4.25×8.5 inch card.

White watercolor paper cut in half and folded.

2. Paint basic shapes.

For each design, I started by painting basic shapes. You don’t need to be super artistic or know a lot about watercolor painting to make these.

Dip the brush in water and add enough to the color you want to use that it is wet. Swirl your brush around the color, then start painting on the paper. You can add more water as needed to fill in the shapes, but if it gets really wet, the paper will warp a little.

(To flatten a bubbly card later, just stick it under something heavy after it’s dry.)

Watercolor ovals in pink, yellow, and blue on paper.

For the balloons, I painted 3 ovals, each in a different color. I was apparently subconsciously influenced by My Little Pony, because these balloons look a bit like Pinkie Pie’s cutie mark. You can use any color, of course.

To make the cake, paint an oval, then extend the shape down to create a cylinder. I added a few tiny swipes of orange for candles.

Lastly, the gift is just a pink square.

Set the watercolored paper aside to dry completely, which should take just a few minutes.

A yellow watercolor cylinder with five orange lines above it.
A red watercolor square on white paper.

3. Add ink lines.

Use a waterproof ink pen to add lines and details to the painted shapes. I used a black pen since my colors were light, but a white pen will have a similar effect against dark paint colors.

Again, just draw simple shapes. They don’t need to line up with where you painted exactly.

Outlining painted circles in black pen to look like balloons.

The balloons are simple ovals. Add a little rectangle for the tie and a squiggly line for the string.

Make the cake as simple or decorated as you like. This is whimsical, so my lines are not straight.

The gift is just a square, a few lines, and a loopy shape on top for the bow.

Outlining a cylinder to resemble a cake with tiny birthday candles.
Outlining a painted square with black pen to resemble a wrapped gift with a bow.

4. Write inside.

Don’t forget to write a message inside your cards. It can be a simple “happy birthday” or “congratulations” or a longer message. And sign your name, of course.

Three birthday cards with watercolor illustrations of a gift, balloons, and a cake.

I love the combo of watercolor paint and simple pen lines. These DIY birthday cards are easy to make in any color. Match them to your gift wrap or use the recipient’s favorite colors.

Slide the card inside a gift bag or grab an envelope. I have a tutorial for how to make an envelope with a printable template. These cards will fit, but are snug. For extra creativity, print the envelope template onto watercolor paper and paint it too.

Beautiful DIY birthday cards made from painted watercolor shapes and black pen outlines.

What’s next? Try these other fun and creative ideas on One Mama’s Daily Drama:

  • 29 Awesome LEGO Party Ideas
  • How to Draw Zentangle Patterns
  • DIY Gift Card Holder Felt Envelope
Previous Post: « LEGO Birthday Party Printables
Next Post: 24 Spring Party Food Ideas »

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

Hello and welcome!

I'm Keri - geek, mom, crafter, and color lover! One Mama's Daily Drama is all about creating a happy home through beautiful DIY projects and home decor, practical planning and organizing, and easy kids activities. Read More…

Footer

Archives

Connect

  • Facebook
  • Instagram
  • Pinterest
  • Threads
  • YouTube

Search the Blog

  • Privacy Policy
  • Disclosure
  • About
  • Contact

Copyright Keri Houchin Design, LLC © 2026 · Thyme Theme by Restored 316

How to paint watercolor birthday cards.