FIC
Hi Geordiejet,
you didn't say what the problem was with your first attempt, but remember the FIE is there to assess your teaching skills. Obviously this presumes a degree of knowledge. Think about how you put things across to a student pilot. You may end up explaining a general principle of something and then referring to book for detail and/or diagrams. Start from the general picture, then work down to detail but keep it simple.
Beyond that, the examiner might then ask supplementary questions to test your depth of knowledge, expecially if anything was unclear or incorrect in your first answer to "bloggs".
Good luck!