Depending on what kind of wallpaper you’re using on your Lock screen, a new jailbreak tweak dubbed TimeMover by iOS developer NeinZedd9 can help you re-orient your Lock screen clock to better match it.
Whether you want to move the time up or down or side-to-side slightly, or rotate it to follow the lines or effects appearing in your wallpaper, TimeMover has an intuitive tap and drag-based user interface for fine-tuning your Lock screen clock to match your unique setup.