Icons make or break the illusion. Search for "macOS icon pack for Windows 7" (usually as .icl packages or .png sets). Use to batch-replace system icons. For cursors, download a "macOS Cursor Set" (.inf file) and install via Mouse Properties.
to swap out every system icon (folders, hard drives, trash bin) at once. The Cursor: Download the El Capitan cursor set. In Windows 7, you can change these via Control Panel > Mouse > Pointers 5. Mac-Style Window Management macos theme for windows 7
Recommendation: If you have less than 2GB of RAM, skip the dock animations and use "Small" or "No Magnification." Icons make or break the illusion