To upload new mask cutting files, it's important to note that this is not done from the Forums section of the site. Instead, choose the Downloads section of the site from the main navigation menu above, as shown in the screenshot below:
Click on the green "Submit a file" button to begin the upload process, and then choose an appropriate category for your design:
Note that our subcategories are expanding all the time, so if you can't find something suitable, choose the top-level category that represents the best fit.
Once you've chosen a category, click the "Continue" button, and you'll be presented with the upload screen. You'll also have the option of submitting a screenshot of your file, so that members can get an idea of what it represents. This is highly recommended if you can do it, but not required.
Scroll down further, and you'll be able to give your file a name, and a brief description. You can also give it a version number, though the system will use the default of 1.0.0. If you subsequently make revisions to the file, the system will allow you to replace it with a new one. If this happens, it's pertinent to give it an updated version number.
That's it!