For everyone who is applying for tourist visa, mind few things.
Why you going ? and most importantly. Why you will come back ?
Huge bank balance does nothing positive. A good stable job with properly mentioned salary transactions in bank statements. My 6 month bank statement had over 500 transactions of around 9 lakhs, I pay everything online, my balance was just 5 lakhs (Borrowed 3 days back), BUT Salary slips has proper mention of PF no and acc no, and salary came in same account and properly mentioned, A healthy statement makes a positive impression that millions of cash can't make.
Be sober and clear in cover letter and humbly put your request. Do not write pages and pages of cover letter, it just makes VO irritated.
I don't knw why and how but Pakistani Nationals have just 5% chance of approval. Its just a fact and not my opinion.