lol my buds have a rollin machine at their house that everybody uses lol everyone calls it the green machine
me and my friend both experienced this... maybe you too??? seems after a while rolling shitty joints.. poof.. i could all of the sudden roll a perfect (maybe not perfect, but u get the idea) one. its a good feeling anyways.
That's how you learn man. I do find however that after rolling joints for a while I become so concious of not messing up that I roll less good ones. Then I take a break and I come back and I roll some fine ones again.