Usually I only draw the main trendlines, since support and resistance can be noticed with naked eye. You said to add also support and resistance.
Here is why I consider EURAUD a candidate for an extended uptrend. Not only it’s connection with AUDCHF that is making new all time lows, all AUD pairs are weak. Beside this, while your resistance is correctly selected, if you look at it through trendlines it can differ quite much.
Is an average of the moves, and spikes. Is trending upwards. And here is where you get an extra 100-200 that gets you wiped out if you are lucky enough and wondered what happened just like all AUD’s traders pairs, and get angry because you didn’t get a reversal (a lot of us). Just theories though.