Mu scanner broke down...

Now i am trying to make pictures from sheet music with my ipad, and then converting them to pdf, and importing then in forescore

However 2 problems
-there is allways shadows from my ipad on the paper
-some books dont allow to be layed really flat, and the roundings of the paper are allways visible in the pdf(those perky books that will not stay open on the sheetmusic stand in the first place)

Any advise is welcome how to use an ipad and convert a piece of music on real paper to a perfect pdf for my dorescore sheetmusic app?