Return to the assembly room. Under the Modifier tab, select Bend & Twist. Set the Bend Angle to 90 and set the Bend Axis Angle to 180. Make sure the Z axis is the one selected. Now your leaf should look like this. Save this file as a Carrara file, place it in the Eovia Program folder under Carrara 5 Pro/Data/Plants. This is for PC, I would appreciate it if a Mac person would chime in about where to place the plant data for them.