Once you've uploaded your DOCX file you can make further edits to it if you like. If you chose to copy and paste your document's text, you will be taken directly to this section.
This section uses a basic text editing tool where you can perform simple tasks such as adjusting the font size and color of your text. Once you're done, click NEXT to preview your newly designed document!
For further info about the online editor and how to resize images inside your document, see this article.