Building a body line help needed

I'm using the duration block kit which I think has 7 different blocks. 3 of them Are 12-14" long and flat, one long round probably 1", and one narrow and long then 2-6" blocks. Also am using a wooden dowel probably 3/8" round and 10" long. If I understand you correctly your saying build the sided first then move to top. I probably agree that the key is patience which I'm not good at. Body work is very frustrating! Thanks for your advice.
Rod