Use the arrow keys to move your ball around advance towards the black line to proceed to the next level. If you are ever touching the black line, but the level hasn't changed, try jumping. It usually works for me. ATTENTION!!! Pay attention to the font that gives you directions on what to do. It will change.
Thanks to @-skyway for the music, Pixel Party. A BIG thanks to the Scratch Team and all the work they put into 3.0 for us! Thank you! I am out of ideas O_o