I really like this thread. Personally, I've gone back to crawling, as I am having a hard time finishing anything. Though over 50 years of model building, I have seen models of all levels, from the worst whole tube of glue build, to the most exquisite detailed model that can, and did win "Best of Show" at the contests and NNL's it was entered. Taking my time, I cannot compete with the "greats" out there, but I am having a pretty good time. One thing I do is ask questions. The best builders out there, for the most part, will be happy to share their techniques on how to do a better model. At a show where I was a judge, I sat at a table preparing a model to paint it. It must have been a show, as I got quite a few questions, as to what I was doing, and why was I doing it? In explaining what I was doing (removing mould lines, filling sink marks, correcting casting flaws, and adding body separation lines) I simply said "look at the real car, and replicae that on your model". Anytime someone asks how I did something on a particular model, I do my best to answer the question. At one of our club meetings (M.A.M.A.), I brought a model that I built about 20 years ago, and started to "refresh" it, as it was falling apart, with grainy paint, and some missing trim. I cleaned and rubbed it out at the meeting, and brought the refreshed model to the next meeting. I got a lot of positive feedback on the model.
I have yet to photograph the finished model, but it came out pretty nice.
All I can say is "If you are lacking certain skills, ask someone whose work you admire how they would approach certain aspects of modeling" You may be surprised that they will be happy to help one improve their skills, and some day, that same person may show the old dog some new tricks.