Another bit of advice Green offers is to note how close you are to the credit limit on any of your cards. If you’re near the limit, that is a black mark against you in a lender’s eyes – the ideal is to have a balance of less than 30 percent of your credit limit. If you can’t pay down the limit, Green suggests asking the credit card issuer to up your card’s limit to get it below that 30 percent threshold. Paying close to attention to credit scoring details, insists Green, can up your score by 100 points in no time.