When the flour taste good (similar to butter is not soft and not too hard. Can be rolled into sheets, and it is important that the dough must chill), remove the butter from overlay on the flour.
This place is good when the (Similar to butter is not soft and not too hard. Can be rolled into sheets, and most importantly, the dough must be cold), the butter and place on top of dough.
When the dough is relaxed. (similar to butter is soft and not too hard. Can be rolled into sheets, and the dough must be cool) to bring the butter cover on flour.