You're prone to headaches and dizzyness when you use your powers for too long. You can only move what you could normally but you also waste more energy. i.e if you can only deadlift 300lbs that's the limit for your power but you also waste double energy in doing so.
Your body is frail, so you gotta keep dodging or buy/make some powered armor to defend yourself. One hit could kill you/injure you seriously without it. Oh, and your stamina is relatively low, so you can't dodge forever.
It's a literal "jump", and does not include the ability to travel faster than light or bend/warp space or time, meaning it still takes you months or even years to get to the nearest planet. You also can't breathe in space, so you better pack a good space-suit with several month's worth of oxygen, food, and water.
The ability to breathe underwater and easily swim and survive even the crushing depths of the ocean floor.
One setting only after activation on the object you want to shrink/expand. (Example: If you want to make a boob bigger, you can't shrink it down again.)