You can make a new one or you can clone (copy) and edit an existing PCB footprint (package).
https://easyeda.com/Doc/Tutorial/PCBLib.htm#Creating-The-PCB-Libs
* Where possible, please start from a suitable footprint (package) that already exists in `Parts > System Components`.
* If you modify a User Contributed footprint (package) then you must check it very carefully **before** you start to edit it.
* In all cases you **must** check your modified footprint (package) very carefully.
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