Well, let's examine your options.
One option is to handwrite it in the space provided, as instructed by the line: "please use the space provided and do not attach additional pages."
The second option is to type something out and attach the additional typed page to the page of lines, perhaps over the instruction that says "please use the space provided and do not attach additional pages."
based on the information provided, I think you should go with option 1, use the space provided and do not attach additional pages.
But you should type it up first to flesh out what you want to say and then handwrite what you typed afterwards. With neat handwriting.
good luck!