Looking for title of a children’s book

[Sandpiper0001]

The book was about a little boy whose father was an artist and he when’s to work with his dad in a loft that was very cold. He would hop on one foot up the narrow stairs and pretend he could put himself in his fathers paintings and threw a ball into a lake of one of the paintings

Does anyone know the title or author

It sounds familiar do you remember when you read it? Was it new at the time?

'The boy who could enter paintings' by Herb Valen.

excelsiorfile.blogspot.com/2010/11/boy-who-could-enter-paintings.html?m=1

I read it in the 80’s. Sounds similar to the description you provided

Thanks for your help. That’s definitely the book I was searching for