So I recently got sent a £50 Google Adwords voucher and since it expires in a couple of weeks I thought I'd better make use of it. I'm not expecting a miracle from it it seems a shame to let it go to waste. I'm having trouble deciding on keywords for my campaign though. I seem to be on page 1 of Google (twice) for "freelance graphic designer manchester" and a few variations through SEO, but it's quite low down. Should I focus on keywords that I'm not ranking highly for but would like to, or attempt to boost the ones I am ranked for? Or maybe try both?