Do you have a good size cutting mat? The larger the mat, the fewer the folds. I would look through youtube videos and see if there is one on folding and rotary cutting. I keep my fabric folded as it is on the bolt and then fold it once more. I bring the factory fold to the selvage edges and line them up. Lay a square (I use my 15 inch)or good size ruler on top of the fabric with the lines on the ruler along the folded edge. You want the ruler line against the fold first to prevent V shapes in the strips you are cutting off. Trim off the ragged edge first before cutting your first strip.