1) Employment Status
What is your employment status in your country are you doing a job or not, basically you need to proof that you are an eligible bachelor
that if you are qualified you must be doing jobs.
2) Travel History ( If a person never traveled outside his country )
That you ever traveled in any other country
3) Purpose of Visit
Your future plan, that are you even planning to return after completing your studies? how will these studies benefit you in future.
4) sponsor is not eligible to finance me
Its simple your sponsor is not eligible to finance you, there can be many reasons for it maybe his income is not stable may be he got other liabilities.
I suggest you to read a post by
readordie he explained this issue in quite detail, so you can search his posts for more detail
5) Financial and Assets
Your current financial conditions? you need to prove that you have stable income and a bank balance to finance your studies.