Children’s picture book about a boy who constructs a world of his own

[SBC]

Hi John, can you give us some more information about the book you are looking for? This will help us to identify it for you.

1) When and where did you read it?
2) What do you mean by 'constructs a world of his own'?
3) Do you remember anything about any of the characters?
4) What kind of artwork did the picture book have?

[Kris]

John, are you still looking for this book - or did you find it?

(OP, 85560152)

[Hadassah]

Harold and the purple crayon?

[Annamarie]

Harold and the Purple Crayon