The File menu has an option for Document Image Writer. Click it to open the document. If it's the first time you've used the program, press Ctrl+P to start it. The Advanced tab will show options for insertion and formatting of images. Choose the one you want to insert, and click OK. To view your image, click the preview button. If you've created a new image, click the preview button.
There are three methods for removing images and writing new ones. First, you can call remove() to delete the current image. Second, you can call replacePixels(). The last one removes the last one, and the third is void. This last function will write the empty image to the output. Finally, you can set the Locale to the specified output. Once you're done, you can call the void write function to write a new file.
Next, you need to install Image Writer. The freeware can write any ISO file to a USB stick. The interface is easy to navigate. All you have to do is select the ISO file and the drive, and the software will write it to your USB drive. If you don't want to use the ImageWriter program, you can use other freeware programs. Unetbootin both allow you to download an ISO and burn it to a USB.