This is the model that inspired me to do better. I built it for a model competition... and it failed.
Hanging around a different area of the cars on display, I heard a fellow who had brought in a 1:12 '57 Chevy ask a judge why his model had also failed. I listened as the judge described the judging method they used. It was entirely technical. A car starts with 100 points. It loses a point for every fault. Faults include paint faults, injector marks, ejector pin marks, lines from where the molds join, glue marks, wonky parts, etc.
Below are pics of what I did to the above model after listening to that judge. What I couldn't fix (the engine) I permanently hid. The rebuild was extensive. The result was a 1st place the next year, and a 2nd when it was re-entered as the defending champion. The guy that beat me that time seemed to have learned the same lesson, as he entered his former build very much improved.