you don't need a stitch regulator... you DO need to drop the Feeddogs tho ... and practice, practice, practice... get some remnants at the store that are pretty cotton, sandwich a small square (anywhere from 12x12 to 18x18) and just jump in and go. Basically, your goal is to match your movement of the fabric with the speed of the needle strikes.
The slip-n-go clingy thing really helps you in learning to move the fabric, too.
You can try these:
2 inch line. Stop. Now go another direction so you get zigzag jiggy-jaggy design...
loops and swirls...
write your name in thread...
make a box, but make it go into itself (like a maze wall)...
5 big loops to make a big flower, then the center make a round swirl
Have fun ~ put on some relaxing music ... have a cup of your fave beverage ... take a deep breath, and remember to breathe while you're FMQ'ing!