Another no routine here, though usually I start them face down. As it's been said repeatedly above, do it the way you need to do it to get through the exam and then don't worry about it, follow it if you need a routine, forget it if you want to go with the flow. If you start to do more than a few massages a month, you'll want to forget the routine anyway, you'll be bored by it, then you'll probably go do another course, it will teach some other routine, you'll finish the course, forget half of the new routine, but add extra bits into what you do, according to what the client wants/needs and how you're feeling that session. Set routines are boring after you don't have to worry about 'have I done the left leg yet?'
'Standard' massage - face down, start on the back
Pregnancy massage - face down, start on the gleutes over the sheet, this is usually the most area of discomfort, I keep coming back to it as they relax more. Almost everyone will tense up when a stranger starts working their gleutes, even if it is through a sheet, I just keep going back to that area until it relaxes.
Stone therapy - face up, stones placed underneath the client, letting the stones do all the work on the back muscles before they turn over
Thai - face down
Lomi lomi - face down
Ayurvedic - varies (depends if there is shirodhara or not)
BUT if it is a relaxation type massage, rather than treating a problem, I let them direct what areas to concentrate on, I've got a couple of clients that ask for just face, neck and feet every so often. If a client's shoulders are really bad and they say they just want their back done, I won't - I will always include more, and get them to turn over too - too many other muscles are usually involved in back/shoulder/neck discomfort - usually a little bit of firmly working the upper arm will make them understand
Someone once said to me 'no animal lets a stranger pat their belly straight away, it always starts with the shoulders & back, why would you start a massage face up?' I don't totally agree with it, but it's one line of reasoning.