what did i do wrong here? post closing entries

Date Account Titles and Explanation Mar. 31 Service Revenue Income Summary (To close revenue account) Mar. 31 Income Summary Maintenance and Repairs Expense Supplies Expense Depreciation Expense 5787 Insurance Expense Salaries and Wages Expense Rent Expense Interest Expense (To close expense accounts) Mar. 31 Income Summary Retained Earnings (To dose net income to retained earnings) Mar. 31 Retained Earnings Dividends (To close dividends to retained earnings) Dividends \begin{tabular}{ll|l|} \hline 3/31 & 850 & \\ \hline 3/31 Bal. & 850 & \\ \hline \end{tabular} Income Summary Maintenance and Repairs Expense Supplies Expense Insurance Expense Salaries and Wages Expense Rent Expense