I cover diaries for Christmas . I make sure you have open wide for the book.use paper to make a cover as mentioned. Cut out front plus seam allowance cut out same size batting and lining. With Hesse 3 bag out and quilt. Now make 2small rectangle to go inside to form a sleeve for the cover to fit in. Bag out and quilt them. With these 3 join either by hand or machine and put bible in.
Additions a notebook which can be made by bagging out as above and sewn to the outside also pen holder, handles etc.. A piece of ribbon or elastic to hold pages open . Etc always decide on extras before bagging out as some could fit in a seam .