When it is deemed necessary to make a public improvement to be paid for in whole or in part by special assessment, the Council shall declare the necessity therefor by resolution, and such resolution shall include the method of assessment, the mode of payment, and the number of annual installments. Such resolution shall thereupon be certified to the Director of Finance and Public Record, who shall thereupon proceed to make an assessment report, in accordance with the method of assessment provided in the resolution, which report shall be filed with the Council, and shall show the lots and lands assessed, and the amount of the assessments as to each, and the number of installments not exceeding ten (10), in which such assessment shall be paid.