Good management of credit cards for bad credit can help you establish a positive payment history which will help improve credit scores over time. (rebuildcreditscores.com)
Higher credit limits can improve your credit score over time as long as your balances are a smaller percentage of your total available credit. (creditsesame.com)
You already know you can gradually increase your credit score over time by avoiding score killers, like charge - offs, collections etc.. (zenithfg.com)