I currently have a major U.S Airport with about 50% of the tarmac complete. With school underway, I dont have time to finish it. I need it finished, not redone. You will be provided with the detailed base and you are essentially just tracing the rest of the tarmac with the same detail as the rest of the tarmac. (ground markings and all)
You are also responsible for making sure it fits with my airport. (Meaning the tarmac reasonably aligns with where planes can move and park and such.)
Depending on the builder and their experience with curves, difficulty should not be that high. References will be provided in DM's. This is honolulu international airport. Again 50% is complete.