From Wikimedia Commons, the free media repository
|This form is only for uploading modifications or derivatives of existing Commons files where someone else created the original, but you have created the derivative. To upload work in other situations, please use a different form.|
|Your derivative must only incorporate works from existing Commons files and your own original work. Incorporation of other copyrighted works is not permitted.
Use the Reworkhelper tool to record all the required information. Don't forget to add at least one descriptive category.
In most cases you should use the same license as the source file.