Deductions & credits

sorry, I think I may have worded that wrong. I'm trying to complete 1040ES for 2019. On line 7- "Credits (see instructions). Do not Include any income tax withholding on this line", I'm just trying to figure out if this would be the same entry line as #18 on form 1040. My husband and I file jointly and I just became a freelancer beginning in 2019, so this is all new to me. Thanks again for your previous response!