Hand piecing problems
My very first quilting course was handpiecing. We were taught to mark the 1/4" stitching line. We marked dots at corners where intersections would appear. For longer lengths, we did use pins every 3 or so inches. We were taught to check the back side to assure we were stitching on the 1/4" line.
The stitches and seams were not pressed like we do when machine piecing. Stitch to where two seams meet at an intersection, stopping at the dots, taking one stitch. Hold the fabric with the left hand fingers and thumb allowing both seams to stand up straight - one up and one down. Take a second stitch on the right of the seam at the dots making sure all four dots are "kissing". Carefully stitch through the intersection coming up on the opposite side of the intersection. The seams are still standing straight up. Take a second stitch on this left of these seams and continue to the end. ALL of the seams will stand until you press the entire block.
Hope this is clear. Ask for clarification, if not.