Ok so i am making a new super mario bros ds hack and i want to know how to make the camera extend above the level in W 1-1

Its simple.
You click the view, place the mouse on top of the box, click and move it up.
And be sure to make the level freescrolling, like 6-6
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And before you ask, how to do that, I will tell you.
Click the view and check the checkbox "Scroll vertically".