Agreed. I would ask for a 5/8" and maybe even go to a 3/4" radius of hollow on your next skate sharpening. It will be easier to "shave the ice" with the shallower hollow and make learning to stop easier. Since you are new to skating, I don't expect you to have to adjust to the shallow hollow like someone who has been skating on deep hollows their entire lives. I am a bit biased though. I much prefer shallow hollows and find no advantage whatsoever in deep hollows. I think it might help you learn to feel your edges better also. Take my opinion for what is it worth though. I also agree with the suggestion to use pads while skating. You are going to fall. No way to avoid it. You will be more comfortable trying new things knowing you have a bit of protection when you fall.