Did you make the paths for the letters by hand? If you're using Inkscape you can use the text tool and then convert the text to a path, just in case you didn't know. Nice quiz!
It's going to take a while to explain here, but there's an easy way of accurately making a quiz like this using certain Inkscape tricks, which can show letters without you having to draw them. If you want, I can explain how to do it in many comments following this one. Tell me if you do!