You can draw bands, and then wiggle. The bands pull things together when you wiggle. To draw a band, hold shift and then click on the end of one sheet, and drag to the end of the other sheet. This draws a band between the two sheets. Make two bands between the top and bottom ends of the two sheets. If you just shift-click on a segment without dragging, you freeze the segment. Freezing is useful later on, but for now, either shift-click again or use to the keyboard shortcut "f" to unfreeze.