Things You'll Need
Instructions
Launch the Delphy's Pattern Packager program on your computer.
Click "File," then click "New Pattern" to create the new pattern template.
Type in a pattern title and description in the text boxes. You can also type in your homepage URL.
Select the pattern's category and type from the drop-down menus. This determines what sort of items can use your pattern image.
Click the "Browse" button to browse your computer for the .dds image file. Double-click the file to load it into the program.
Select the number of colors from the "Number of Recolourable Palettes" option. You will see a sample of the pattern colors in the box on the right.
Click "File," then click "Save As" to export the image into a Sims 3 package file. Save the file somewhere you can easily find.
Open the folder where you saved your file, right-click the package file and click "Copy."
Open the Sims 3 mods folder on your computer. This is located in the Documents folder at "Documents\Electronic Arts\The Sims 3\Mods."
Right-click inside the Mods folder, then click "Paste." This will install your custom pattern in the game. The next time you launch "The Sims 3," your pattern will display as an option for customizing clothing or items.