Tourist Visa for 25 year old

[cargon]

Hi,

One of my cousin is getting married in the USA. And my uncle is inviting me and my parents to attend the wedding.
Both my parents have a visa visa and I am going to apply for the first time.

I have finished my education and I currently do not work .

My Uncle will be sending the wedding invitation on my name.

What else do I need to carry besides the card and regular visa documents?
And what are my chances?

P.S - I am applying from Hyderabad Consulate