I love paper piecing and it took me a few goes to get my head round it but I much prefer it to patchwork. As others have said the printed line patterns are backwards so that the final piece comes out the same way as the final design. It looks like it is a design flaw rather than anything you are doing.
I would recommend this designer - Janeen on craftsy quilt art designs) I have ordered her projects by price on this link as many of her free ones are simpler. Don't be put off by the bigger ones though - the couple I have made so far are no harder than the small ones and worth the price as everything goes together so easily
https://www.craftsy.com/profile/quil...dClasses=false
oh I watched so many YouTube videos that made it over complicated - that first link that suzisew posted is by far the simplest and easiest and helped me to get my head round it. You apseem to be doing fine though