You can download pictures from the Huawei Valiant by doing the following:

1. Connect your phone to a computer via USB
2. Swipe down from the Notification Bar at the top of the screen
3. Tap "USB options" and choose either USB Storage or Media device (MTP)
4. Wait for your phone to appear on your computer as a USB storage drive
5. Navigate the folders on your phone and locate the photos you want to download, then copy/paste them to your computer as you would with regular storage drives