Imagine trying to ask a question like ...
hey guys, I wanna do a soft-lit, portrait but all I have is two Vivitar 285s and optical slaves. No umbrellas or softboxes. If I place one 285 say on the left and one 285 just behind the subject, but instead of firing the flash into the subject's back for hairlight, can I fire the unit into the wall on the subject's left and hope that the bounced flash will provide both a hair light as well as a global fill?
It would be soooo much easier and clearer if you used a diagram like this:
It makes visualising what you have in mind SOOOO much easier.
Sometimes, it might actually help you get a clearer idea of what you want to try to achieve.
You can get the free softwares here: