Please draw the lower lines as shown here. Those should be curved, ends always horizontal, remain under the backbone (and inside the outline), beginning points must be symmetrical. In this phase, it is advisable to draw the lines using SharpBrows pairs system (first lower line ends at the mid-point of first upper line and after that, all lower lines end underneath the end-points of the upper lines. The last of the lower lines must end at the pt 6 close-region. Please keep in mind that on a live model you can not wipe during the first phase.