Not dumb, just new to Fritzing (which is sometimes complex) 
. Your part should be in one of the parts bins in the right hand window, probably the mine parts bin. That is what you need to click on to get the export part menu. That will write an fzpz file to the filesystem suitable for upload.
Edit:
It looks like you can do the same thing by clicking on parts->export part in the top menu bar. I’ve never used it before, but it look like it is the same as clicking on the part in the mine parts bin and works from a view which can be easier than finding the part.
Peter
