I wrote up last month how I became good at estimating time. http://rachelandrew.co.uk/archives/2014/06/20/how-to-become-good-at-estimating-time/ http://rachela

I wrote up last month how I became good at estimating time. http://rachelandrew.co.uk/archives/2014/06/20/how-to-become-good-at-estimating-time/ http://rachelandrew.co.uk/archives/2014/06/20/how-to-become-... TL:DR you need to start tracking your time and noting when your estimates were incorrect. Fairly quickly you get to a point where you can see the places you tend to make a poor estimate and adjust them.