Draw a large uppercase letter J onto light blue construction paper. The letter should be thick enough to allow room for tentacle details. Cut out the letter carefully.

If making this letter craft for preschoolers who are still working on scissor control, pre-drawn outlines offer helpful guidance. They can confidently follow the lines, focusing on working the scissors properly.

Using dark blue construction paper, draw a rounded jellyfish body. The shape should resemble a soft dome or half circle with slightly curved edges. It should be big enough to cover the crosspiece on top of the J with nothing showing through.

Cut out the jellyfish body.

Apply glue to the bottom edge of the dark blue jellyfish body. Attach it to the top curve of the light blue letter J. The letter now forms the main tentacle structure.

Allow a moment for the glue to secure the layers.

Using a black marker, draw two oval eyes and a small curved smile on the dark blue jellyfish body. Simple features work best for preschool learners.

This step encourages creativity and facial expression exploration.

With a blue marker, draw wavy lines flowing downward along the length of the letter J. These lines represent tentacles drifting through the ocean water.

The finished craft presents a friendly jellyfish floating down the page, fully connected to the uppercase letter J.