Hi friends and Phil @Leathercraft Masterclass, I need help to understand how to improve my stitching.... I am doing an experimental project , so I chose contrast colour of thread and leather, and tried different leather types. This part shows obviously the problem of stitching, but I don't understand the reason (I had better result on 3.8mm veg-tanned leather before) , because I have intentionally punched the holes into a consistent depth (I thought they were consistent :-) ) , tightened the treads, played the guitar. But there is no wave .... . I used 3.38mm pricking iron and 0.45mm prewaxed thread. Could you help me to see where is the problem ? Thanks a lot ! Simone

Thank you @Leathercraft Masterclass Phil for these priceless advices ! WOW !! And also thanks to the person who promoted you :D I would do according how you told here, one by one. I do want to reach the perfection someday in future, and I am so lucky to find a master like you to learn from.