Hi,
With backwards skating there are a few different methods to get moving.
I started doing lemons (sculling) and it took me about half and hour solid until I could move without catching the picks but doesn't work for everybody. The posture helps if you bend your legs and sort of sit back while keeping your back straight. The other method is stepping forward where you alternativity push with each foot. Once you have the basics and feel comfortable you'll get a lot smoother .
My one-foot backwards glides are improving.
I discovered last night that the backwards crossovers are in fact level 7. I have them almost perfect going clockwise around a circle which has the weight on the left leg which is the inside leg. counter-clockwise I'm not very good. But we'll be working on them again next week.
We have done some things that are at different levels like I think it's called a lunge where is take a position as if your going down on one knee and drag the other foot behind you with just the boot in contact and not the blade. And depending on how flexible you are the lower you'll be able to get. If you get it right and your weight is over the center of the blade you should be able to glide about half the width of the rink without having to get up to increase speed but if you haven't stretched that far in a while expect to be a bit sore the following day. I know I was.
And the other one was from a still position to jump and turn half a revolution and land safely. We did try skating forward and doing the same but I didn't the explanation so didn't do that part too well.
We've also done single-foot spins .Best I've managed is 3 revolutions ,and that's using the other leg for extra momentum by bringing it across the other leg while doing the arm movements. Works well but balance play a big part and you should never lean backwards at any point for you could land up doing some damage to yourself.
The natural progression from single-foot backwards glides will be to use the edges. So much of figure skating is done backwards. All but one of the jumps start from backwards the exception is the Axle which starts forwards then turns to backwards before launch.
Also for 5 pounds you can sign up for 8 weeks access to the Skate UK videos which goes through each level and the elements.
Again if your looking for videos there are some by a Russian skate Dometry Olympia which you can watch for free. Think I've spelt his name wrong but I'm sure Google could find them.
I really like skating and am wishing I'd started many years ago. My first introduction to it was at school some 25+ years ago when they have the Gym covered in artificial Ice for a day. We got to skate during our games lesson and then in the evening. But as there wasn't anywhere local I moved to roller-skates which I did for about 3 years before the placed closed.