Hi phase190
No need to apologise - sometimes people say 'head' when they mean 'mind' and I just wanted to make sure you meant your head!

The head area is one of the most difficult areas to relax. There is a specific relaxation of the head on the Monroe's Wave I Discovery CD, but if you don't own it, it's not worth the money just to relax your head!
Here's a very rough version of his rundown (very rough as I can't remember the words he uses). Anything similar to what I've written will suffice - it doesn't have to be exact. Concentrate on the parts that you personally find difficult.
You should be saying these words to yourself in your mind while you are relaxing, and after you have relaxed your body...
Write your own script down and get to know it very well, because each time you say these words, the parts of your head will know that it's time to relax. Over time, you will simply be able to use just the numbers and it will be a lot quicker...
The words should be said slowly with (say) a 2-second gap between sentences and a 5-second gap between numbers. Again, it's up to you - do whatever works for you.
_______________________________________________________________________________________
1. Focus your mind on your cheeks. Allow your cheeks to relax. Feel your cheeks slowly and surely going to sleep.
Wait 5 seconds - relaxing - checking on your cheeks that they are relaxed.
2. Focus your mind on your mouth and jaw. Allow your mouth and jaw to relax. Feel your mouth and jaw slowly and surely falling asleep.
5 seconds.
3. Focus your mind on your eyelids. Allow your eyelids to relax. Feel your eyelids slowly and surely going to sleep. Relax.
5 seconds.
4. Focus your mind on your eyes, on the nerves and muscles that control the movement of the eyes. Allow those nerves and muscles to relax. Feel your eyes slowly and surely falling asleep.
5 seconds.
5. Focus your mind on your forehead. Allow your forehead to relax. Feel the tension release outwards and upwards from your forehead. Feel your forehead slowly and surely going to sleep. Relax.
5 seconds.
6. Focus your mind on your scalp. Allow your scalp to relax. Feel your scalp slowly and surely falling asleep. Relax.
5 seconds.
7. Focus your mind on the whole of your head, from the top of your scalp to your neck. Allow the head to relax, to let go. Feel your head slowly and surely relaxing.
5 seconds._____________________________________________________________________________________
It is deliberately repetitive and monotonous - to help you slowly drift away to a more relaxed state.
I have found that I struggle with my forehead. Often I go to check it (mentally) and find it's in a slight frown - I think this is down to concentrating on being relaxed (which is a bit of an oxymoron!). The eyes are a problem for a lot of people - I overcame this by buying an eye-mask. The mask keeps the eyes closed, even if they want to open.
If you find you want to swallow at any point - then just swallow. The swallowing action will bring you to a slightly less relaxed state, but that's ok, you just talk yourself down again.
Over time, as you learn that 1 = cheeks and 4 = eyes, you will simply be able to count down using the numbers only, and those parts of your head should respond accordingly.
It might seem like a lot of hard work just to relax your head - but it is worth the effort. Once the body and head are relaxed, you've only got the mind left and after you've mastered that, you should have all sorts of weird and wacky things happening!

Hope this helps. Have a bash with it - play with it for a couple of weeks or so. Any questions in the meantime, just shout!
Sarah