How do you morph into a blob on Drawn to Life the Next Chapter

Hold down the right button on the DS. once you are there this screen will pop up with a bunch of blue things (like x's and a blob figure and a person) use the + pad to select the blob figure (it doesn't have legs) you also use the left button to switch weapons. once you have selected the icon you want, just stop holding down the right button. You will automatically shift into the other character/weapon.