Idea from https://commons.wikimedia.org/w/index.php?title=User_talk:Matma_Rex&oldid=182354447#Upload_wizard_2:

Add bottons to top as well: after adding categories/descriptions, sometimes you have to scrool the list all to the end, sometimes you need not, so it would be useful to have the "continue" botton at the top of it too (now it is at the bottom only). Also, when you finish uploading it takes you all the way up: if you do not need to revise all the images, it will be useful to have the "Upload more files" botton at the top too.

Related: T67941: Place the "Add more files" at the top of the page.