Begin the center braids.
Each of those braids you started on both sides of your part will last on to form complete braids that wrap around your head. This means that by a birds-eye-view of your finished head, there will be concentric circles formed around your part. Follow the design of this perimeter braid, by sectioning off thin pieces of hair around the outer border and functioning. Proceed to the next braid closest into a hairline, and braid on either side of your part towards the back of your mind.