Certainly a larger pot, plus good fertilization will help, as will fast draining, gritty soil and lots of light and humidity. Beyond those, I don't think there's much else to say if you don't have in-ground planting. But the Serissa grows quickly, a lot faster of course than an oak!

LOL amen! For these bonsai starters, should I just let them grow as they will for a while, let things mature a bit? Or should i keep some of the wilder growth in check? I know on this serissa one of the branches seems to have developed from the bottom...2nd trunk, maybe?

Heres a pic for you. Note, it seems the inner leaves seem to be reverting to a non-variegated form *tear*:

{{gwi:17893}}

Thank ya lucy :)

grrr, i'm not seeing the picture anymore. heres the url:
http://image72.webshots.com/72/4/74/34/2043474340038638429wAvtoy_ph.jpg

Hi, leaving the lowest branch or two will help fatten the lower trunk more quickly, and if it doesn't fit your eventual design, then you could get rid of it once you're happy with the size, which is why such branches are called "sacrifices". Also, don't prune roots any more than 'necessary', which would take into account things like taproots, which you don't really want to grow out, or e.g. 1-2 odd roots going in very wrong directions. Green leaves on variegated plants is sometimes a genetic thing, but often happens when the plant doesn't get enough light close up, or enough for long hours every day (up to 16 for tropicals), and inner leaves will do it if they're shadowed by other leaves.