I will try but I am not sure I understood everything because I believe that Google Translation has made some translation errorsLooks good so far. One thing that might make things a little easier though. Spin your cylinder 90 degrees and scale it to match the length of the model. Then, connect the edges around the cylinder with several edge loops. Working in side view, scale Z to match the profile of the 3 view. Once done, move to the top view and scale X.