You launch the app from watch. If you have mini launcher, which I recommend, just Swype right to open mini launcher, then find 1 watch and click it to launch it. From watch app, click mic and give voice command. You know you're in the watch app if you seed the Mic symbol. You can say things like... 'get image of'... and give your search and the app should loss the background image based on your search. The list of voice commands can be found from the watch app. The phone app is strictly for watchface customization. The watch app allows watchface customization from watch and some additional features like... get news or show tweets... etc
Also from watch app... Say share screen and your watchface will be sent to your phone to share online... tweet your screen lets see what it looks like.... anyway... have fun. If you need any help feel free to pm me or respond to thread. Share with friends please and thank you.