I will have a go at explaining in more detail about lemons/fish.
A bit of physics first. Consider standing upright, feet splayed outwards as mentioned. You move your feet apart by muscle strength (on the onside edge to make it easier) and they get further and further apart. You should find your body descending, as your legs get wider apart. This is known as converting potential energy (from your raised centre of gravity) into kinetic energy (motion). Once you have started to move, it should be relatively simple to keep moving apart, as you are continually feeding energy into your movement by sinking. Lots of beginners do this inadvertently, and find their feet moving away on their own, following this very principle.
Once your feet are about two feet or so apart, you should angle your feet slightly inwards, and pull your legs together using your leg muscles. This will assist bringing your skates back together, and your posture should rise accordingly. You should find this far more difficult, as you are relying purely on muscle strength to overcome gravity and raise your posture.
Initially, your leg muscles are not used to this effort, and will be underdeveloped, and you will find this hard and exhausting, but with continued effort, it will get easier. In addition, as is the case with most skating elements, there will be a eureka moment, when you suddenly get the feel of the technique and it becomes a lot easier.
To summarise - feet angled out with heels together, on slight inside edges. Push outwards and you will glide gently forwards, then curving your feet back inward and PULLING in, always using your hip and upper leg muscles. Try and keep your momentum going, stopping and starting again is very hard. You may find practicing from an initial two foot glide is easier, but remember that when your legs move apart, your feet ARE angling outwards, even if only slightly.
I hope this is plenty for you to think on anyway ...
this free online video may assist ...
http://sports.expertvillage.com/videos/forward-swizzles-advanced-ice-skating.htm