OK, I am assuming that you want to know how to do a SM game in the vein of Planetary Romance (PR - which is what I have always thought it was called, though many are now calling it Swords & Planets), and not how to just have more romance in your game.
The characters in PR are larger than life, well above average individuals; both physically and mentally (particularly in their mental fortitude). Flash Gordon was not just some random football player, he was considered one of the very best at the time; Dr. Zarkov was not just your average scientist, he was an absolutely brilliant one working on the cutting edge, and Dale Arden wasn't just pretty, she was beautiful and pretty-smart and physically capable, as well. To reflect this in SM, they need higher than average stats and talents that grant them bonuses in their specialties; because the bad-guys are over the top and only those who can equal them have a chance. So, to reflect this in a naturally gritty game such as SM, you need to grant the characters more stat points off the top and allow more of a free hand in talent allocation. This will help the characters be exceptional and not just your average, or slightly above-average, individual.
Example: Instead of the 660 stat points (or the 600+10d10), go with 750 to 800. And for potential, allow one or two to be 100 or a few points above that, like up to 102 or 103, or just allow them 2 rolls and choose the best. This is to ensure their potentials are exceptional, too.
With talents, grant them a certain amount of free points (don't be stingy, here), and the option of taking a few flaws for more. This will help the characters be the pinnacle of their chosen fields - which they are supposed to be in this genre.