First off, I'm not very great with making shells. Still experimenting and had so many failures. But these are what I know.
I think magic gloss is pretty easy to handle actually. First, just pour the resin into your mould. Turn on the uv chamber for 4-6minutes(Depending on how thick you want it to be). I normally go for a 4minute.
Magic gloss doesn't harden right away, so after the 4minutes is up, pour the remaining resin in another container and flip it around and cure it again for a good 12-15minutes. (I recommend you do one shell at a time, and focus on the steps and handling of the mould when curing.) Thats about all to it.
THINGS TO NOTE.
Like I said the magic gloss doesn't cure/harden fully right away after the 4minutes. The shell is in like a jelly type of state at the 4mintue mark. And any great amount of force compressing the mould will cause the shell to have wrinkles after it cures(so remember to handle it carefully). For a full cure, it would take up to 15minutes after the initial 4mintues.
Secondly, you won't need to clean the additional tacky layer like most other uv resin would require.