There are clear instructions in the form that you should read before filling the form, now there is no way to change your exam center

You should have first fill the photocopy of the form and than fill original form.
This must be taken care of in each and every form which you fills

Now You cannot even use whitener for correcting your mistakes as the form won't be graded than

Well I will suggest you to opt for a new form , definitely that will cost you