Hi Dolly! Here on Wikitree we have a philosophy that there is no "my tree" or "your tree", that we are all part of the same big Tree.
That being said, many of the people in your files may already have profiles on Wikitree. Here on Wikitree we do not make duplicates and if we inadvertently duplicate a profile, we merge them together.
I do, personally, recommend go one-by-one when it comes to making profiles. I think this helps us all pause and reconsider what we're contributing to Wikitree, look over the sources once again, and catch mistakes before their become canonized as "internet fact".