well, i have been doing freelancing (PHP SQL ) for a year now, ussually i do it for a designing company, i script it for them n they pay me end of project

but if u found any clients that wants u to do a project , wud be a good idea if u demand..erm..'ask' for partial payment, that wud secure u just in case they decide to drop off the idea n project half way..i went tru tat
hahha

gud luck ( doing a portfolio of wat u have created b4 will help tremendously )