One of the factors your Experian Credit Score depends on is the current balance on your credit cards in comon to the credit limit.
In other words if you have multiple credit cards with a balance that is close to the credit limit / high credit, it is likely that your Credit Score will be impacted. Ensure you do not accumulate huge balances on your card and if you do, always try and pay off the balances on your card to avoid reaching the credit limit.
One of the factors your Experian Score depends on is the number of active loan / credit card accounts reported in the last 24 months that carry a current balance. A high balance on such active accounts will impact your Credit Score. Paying off the balances on the loan and credit card accounts as well as not having too many open lines of credit with current balances will help maintain your Credit Score.