Sketch.
Here I put color and lighting details to the character.
Here I made the eye and details of textures.
The other character applies the same details as the first.
Here I am applying background color to the character.
Here I used lighting details, textures and some brands.
I used a layer to give depth to the character.
I made a hat for the character.
I changed the color of the hat and started making another character.
I made lighting details for the new character.
Here I made details of textures, marks and face.
I put hair on the character.
A new character.
Details of lighting and shadows.
Here I made marks, textures and hair.
In this stage the illustration is more advanced.
Here I changed the size of the characters, changed the background color and applied a texture.
This is the finished illustration.
Note: to advance the process I skipped many important captures as: the details of bubbles and the construction of the majority of characters.