it cutts it evenly into the number you select...
i suggest using paint and making tiles the right size for your animation, then tileing them over the screen
Step 1: Make Tile
Step 2: Draw first figure
Step 3: copy into correct number of tiles
Step 4: finish rest of animation
Step 5: remove tiles
heres an example
useful paint shortcuts for tiles:
Hold shift and drag mouse to make perfect squares with the square tool
hold Ctrl and drag with the select tool to copy the selected item
Ctrl+C = copy
Ctrl+V = Paste
Ctrl+X = Cut
Ctrl+Z = Undo
Ctrl+Y = Redo
not sure if this is what you wanted