I wasn't going to comment but, I know what Ferg is saying and some people just spit it out. Hopefully Ferg doesn't spit it out on any of MY work... lol... But about the tape measure, practice will make you better. Some people just have a knack or talent for just about anything they put their hands to. If leatherwork is something you enjoy, each piece should show improvement. I know that you will look back on past pieces and say" Ew, I made that??" I HAVE DONE THIS! So just continue to move ahead on the next project and scour the forum for help. There's alot of information that's invaluable here. Good luck.