really should avoid transplanting at all, plant your seeds in large enough pots so that you won't have to transplant later.. don't worry, she'll grow into it :P

but if you must.. make sure the soil is moist enough to hold together, the easiest way to transplant is by watering the day before, this is to make sure that when you turn the pot upside down, the soil won't just crumble apart.

to transplant turn the entire plant (pot and all) upside down and lift the pot off of the soil.. if it's moist enough it won't fall apart