Sis, let me share my experience and info na i know about student visa application:
1)Show money: the money need not be in your own bank account. Pwede ka magpa sponsor sa relatives mo or close friends as long as strong yung proof niyo for the sponsorship. Kasi medyo malaki ang amount needed. In my case, umabot ng Aus$50,000. You can have up to 3 sponsors naman eh. The more the sponsor, the more documents you need to prepare like affidavit of support, their bank statements, proof of income, employment cert, proof of relationship, o kung ano mang documents para maging strong yung sponsorship.
Second, if you have dependents... Say you have 2 kids and you're married, kasama sila sa computation ng show money mo maski hindi mo sila kasama. Kasi your show money includes your tuition for the first year, health insurance, cost of living, airfare, your 2 chikitings(im not sure how much), and your hubby. Aabutin ka talaga ng malaki sa show money kaya magpa-sponsor ka na lang. Sa case ko, kami ni hubby ko, around 2.3M show money since mahal ang tuition ko. Kailangan lang ma-meet yan sa bank account ng support mo.
Third, if you're planning na isama naman kids mo na school-age na, madadagdagan pa show money mo kasi kailangan *** schooling fee nila dun and medyo mahal din.
Kami ng fiance ko, *** joint bank accounts namin, proof lang un ng relationship namin kasi di pa naman kami married. De facto relationship pa lang kami.
Message mo lang ako pag may question ka.

San pala plan mo sa Aus? Mag study ako nursing dun.