Must remember that with the other designs. I'll make sure to double check the legth after
Now, what would be the next step...?
Fastest solution to avoid this is to add whitespace to the side of your reference image. For example, if, on the reference image, you have a ship that is 1243 pixels long, you would want to make the total image an integer multiple of that - either 2486 or 3729 pixels long. Once you have that, you can scale the entire image to the correct size, while not getting the minor error that you sometimes get.