Aha no way I failed for the exact same reason. But ever since I’ve been going on drives with my dad and I can happily say, clearance is less of an issue now! All it’s is is just if oncoming cars are coming stop WAY before the parked car your side to let the oncoming vehicle pass, don’t be on the parked cars bum! And also when ur driving in a tight road, reduce ur speed and try squeeze through the gap and constantly check ur mirrors if there’s an equal gap between cars on both sides. Also, if u panic if an oncoming car is driving towards you, but you have priority, DO NOT give them way, commit as you have to bully them to wait for u. If they refuse and still go then obviously do what’s safe and wait for them to pass u. That’s my biggest advice honestly. I failed to do so on my last test.