Even though teaching in US, I have my JAA FI and try to implement the structured approach on my students..... I know I know, I do step away a tad from the syllabus but I try to be flexible, and the end result is better. Team leader agrees, all fine!
And for the original question, how to teach level turns;
Firstly, let the students maintain a level turn I put them in, emphasizing the "visual picture" by using dashboard, cowling, horizon... give them small hints what I use.
Secondly, teach entry
1. Look Out!!
2. Aileron
3. Rudder
4. Back-pressure
5. Opposite aileron
6. Relieve some rudder (not very noticeable in C172)
Thirdly, exit of turn
1. LOOK OUT
2. Aileron
2. Rudder
3. Yoke slightly forward (..or remove back-pressure)
4. Centralize
...with instruments more or less covered up, quite early in their training. I fly with too many FS nerds!!