I let that dry for...mmm....not sure, but possibly overnight? I spent too long cutting out letters and painting in stencils to risk any smears. Then I sewed all the pieces together, except for the last remaining strap. That can remain unsewn for many days. : ) You can see I wanted to make the straps extra sturdy so I sewed them on in pretty much every direction.
I hope you like the bag, I couldn't resist making it once I saw the idea! And I guess I should point out that we do go to the library on a semi-regular basis and come home with a big stack of books so this will come in handy for us. Thanks for reading!