Early advancing
Before jumping for the first time, you can spend 10 jelly to advance to level 10. If you feel that you are a skilled player, it is worth doing this. From level 10 onward, you will be able to collect more jelly, which is the game's premium currency.
Layout
You do not have to squeeze the jelly perfectly through obstacles. Even when you are squashed slightly, you can continue. You may have to tap the screen a few times to escape. However, it is still recommended that you always attempt perfect jumps. Take your time when jumping and do not tap too quickly.