The easiest for me and I build quite a bit of these, I first glue all the cover strips on all the outer leg and arm parts let dry then glue in the inner parts using strong earth magnets to hold in place and also use tape in areas to avoid part from sliding around while glue sets, the right thigh is a bit more of a challenge because the raised lip is quite crooked, that is why I glue cover strip on the outer right thigh first, just align cover strip at top and bottom don't pay attention to the crooked raised lip which will be hidden by the cover strip. I have seen many people start by gluing both halves togheter by using a inner strip first then glue on the outside cover strip, I actually do the opposite which i find I have more control for adjustments.
Mark (AP)