Welcome.
Beautiful work, really great style. Love the presentation too, so will check out the tutorial
Did you consider modelling the iris and pupil on the eyeball to help painters? Just a simple damstandard engraving would be enough.
I think you have made more cuts than I would consider necessary, but that may make your life easier as you are getting to grips with casting. In the long-term, more parts makes things more expensive to produce. Perhaps not a concern until you produce lots!
The 'accessories' sprue needs the glasses and magnifying glass to be held on stalks away from the mould block, like the hands. You shouldn't need that vent in the middle of the magnifying glass, if you are casting with vacuum.
So how are you casting? What is your setup?