Your instructor will not put you forward if you are not ready. However, once you have completed flying training and theoretical exams, it is time for the PPL skills test.
The examiner will assess your ability to navigate accurately from A to B and to see that if you are off-track, you can regain track, and if you need to change frequency you have that frequency to hand on your flight plan. Once the examiner is confident that you are aware of your surroundings and can cope with unplanned diversions from your intended route and re-plan your flight swiftly and safely, you'll move on to the general handling part of the test.
The examiner will want to see a safe and competent level of airmanship, with a demonstration of upper-air work (slow flight, stalling, turning, practice forced landings, etc.).