3. Right click on your model and select Convert To:->Editable Poly. Now go to edge mode and select the 2 tallest edges and hit the small box next to connect. In the dialog that comes up set it to 4 segments and press OK.
4. Now go to vertex mode and move the vertices around until you get the desired shape. If it doesn't work out, just look at my model. After that go to the Hierarchy tab(on your right, the button with 4 boxes on it).Once there, select "Affect Pivot Only" and then move the pivot around the bottom of your leave like I did:
This is so that rotating goes easier.
5. Now hold SHIFT and rotate it couple of times so that you get something like this: