WPF Custom checkbox with binding

I want to have custom checkboxes in my application with images instead of the normal box. I also need to have different images depending on the checkbox so I thought I'd use a binding in my custom checkbox class to a class that has the images.

The C# code for my custom checkbox.

public class LogoCheckBox : CheckBox
{
    private Service _service;

    public Service Service
    {
        get { return (Service)GetValue(ServiceProperty); }
        set
        {
            SetValue(ServiceProperty, value);
            UncheckedImage = value.OtherLogo;
            CheckedImage = value.Logo;
        }
    }
    public static readonly DependencyProperty ServiceProperty =
        DependencyProperty.Register("Service", typeof(Service), typeof(LogoCheckBox));

    public ImageSource UncheckedImage { get; private set; }
    public ImageSource CheckedImage { get; private set; }
    public LogoCheckBox()
    {

    }
    void CheckedHandler(object sender, RoutedEventArgs e)
    {
        //Change displayed image
    }
}

I'm pretty stumped when it comes to styling the thing in XAML so I have the wanted behaviour.

My question is basically: Am I on the right track (this is a good way to achieve the functionality) and if it is how do I style it properly?