1) Your credit score
2) Your downpayment
3) Primary or secondary residence.
The answers to these three will get you started.
IF your credit score is good and you have a min. 20% down for a primary residence, you should not have too much problem. If is not a primary residence, you better have an excellent credit rating and atleast 30% down.
Also, be prepared to provide every kind of financial information that you can possibly imagine and allow for 60+ days to get the loan closed.
est of luck...