Instructions
Start by playing the level through and making a note of any difficult sections. It is important to understand that it is almost impossible to ace a level on the first try. If you encounter a problematic section, try a few practice runs to ensure you have nailed the correct technique.
Repeat the level until you can make it through all the obstacles without dying. Also, try to collect as many of the prize bubbles as possible. They are often in perilous and hard-to-reach locations that could result in you being killed. Once you have collected a prize bubble, it is replaced with a generic bubble that only awards you a handful of points. If you collect all the unique prizes on your early runs, you will not need to take risks when you try for the ace.
Restart the level once you have collected all the prize bubbles and mastered all the dangerous sections of the level. Work slowly across the obstacles, bearing in mind that your time does not count toward your ace award. It is far safer to work slowly and methodically over each obstacle, making sure your jumps and grabs are accurate.