When I started using pen in My primary school & I made a mistake ,I would try hard to erase it before submitting to my teacher. Sometimes I use chalk to clean my mistake but it later reappeared, so I began to us saliva. it worked but only to leave a hole in my books. my teacher then used to beat me for being outrageously rough, but all I tried to do was to cover my errors. One day a kind hearted teacher who loved me much called me aside and he said anytime u make a mistake just cross it & move on,he said further trying to erase your mistakes would only damage your book to nothing. I told him prompt that I don't want people to see my mistake,my loving teacher laughed & said"trying to erase your mistake will make more people know about your mess& the stigma is for life. Have u made so mistakes in life?,cross it over $ move on. Don't expose yourself as a result of trying to cover your mistakes. better things are ahead of us as a Christian, you have the assurance that Christ paid for your mistakes...the cross has crossed your mistakes. cheers!!!