Slowly take villagers from sheep and send 4 to wood (split so there is five on each lumber camp), 3 to gold, 1 to make a house and then a barracks, and the last 2 to straggler trees. As always, I am taking suggestions for the next build you would like to see so let me know. Briton archers are one of my favorite units to play with so if you're the same, this build is for you.
Here is a video guide for the 21 Pop Briton Archer Rush that I've had a lot of success with.