Help

I love escape games. They are ALL I play. But I cant figure out anything excep to collect the green brush, the yellow coin, and to use the brush to clean the book page. I have had this app on my phone for almost a year, trying it over periodically, always hoping someone will post a walkthrough eventually... but no! Someone give me a couple of hints for gods sake!! One star is all until then.

Beaverwithachainsaw about Bath Tub