How do you write a General Project Estimate Spreadsheet?

PROJECT ESTIMATE Hourly Actual Hours Tax Rate Maint all calculations include tax Total Time Estimate Total Price Estimate COMPONENT QTY Est Time Price Time Yearly Maint Estimate Insert Line Item Description Yearly Maint Time Est Insert Line Item Description Insert Line Item Description Payment Option front Insert Line Item Description pay front off est Insert Line Item Description Insert Line Item Description Payment Option front Insert Line Item Description payments milestone Insert Line Item Description delivery Insert Line Item Description Total Insert Line Item Description Insert Line Item Description Insert Line Item Description Payment Option Time Estimate Insert Line Item Description hourly Max Time Billable Insert Line Item Description Insert Line Item Description Actual Cost Insert Line Item Description Estimated Cost Insert Line Item Description Maximum Cost Insert Line Item Description Insert Line Item Description front Insert Line Item Description Insert Line Item Description Insert Line Item Description Additional Fixed Costs Insert Line Item Description Insert Line Item Description Proposal Design Only Insert Line Item Description Insert Line Item Description MAINTENANCE QTY Est Time Price Insert Line Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description FIXED COSTS QTY Est Cost Price Insert Line Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description Insert Line Item Description.