For this project I used:
Several sheets of different colors of bright colored cardstock
A paper grocery bag
Glue Stick
Scissors
Firstly,
Begin by cutting your paper bag open, and then cut off the bottom flap, so that you have one large sheet of paper.
Then,
With printed side of the grocery bag up, place the book on top and fold down the top and bottom edges of the paper to match the top and bottom of the book.
Next,
Fold one end of the paper and slide the front cover of the book into the open end until the edge of the cover meets your fold.
Example of step 3
Step 4
Close the book and crease the other end of the paper where the edge of back cover meets it.  Slide the back cover into the open fold.  Your book cover is now complete.  Well, your boring bookcover is complete.  Now let’s spice it up some with colorful paper follow the kinds you like !! 💓💓 (The first pic is one example)