To change the size of the icon, follow the steps below:
1. Start Control Panel.
2. Click Appearance and Themes and click Display.
3. Click the Appearance tab and click Advanced.
4. From the Item pull-down menu, select Icon.
To change the spacing between icons, select Icon Spacing (Horizontal) or Icon Spacing (Vertical) and type in the required spacing in the Size field.
6. Click OK to save changes.
7. Click OK to exit.