Others will chime in I hope, but for question number one...all of your cut seams should be on one side and the back side is smooth. Question two...I would sew the little squares together using little squares of batting to make one 8" square when finished then so that to the larger squares. Be aware that there are "quilt police" out there and they are not always correct. You seem to have some pretty good instincts. You will gain more confidence as you go. Good luck and post a pic when you're finished.