Are you sure the layer at the bottom is citric acid?  It might be small xtals.  Did you let the citric acid diffuse slowly or did you stir to dissolve?

The mg/gram refers to the amount of citric acid per ethyl acetate.  Since you have about 800 grams of solvent, you only added an extra 3.75 mg/gram, so you should be fine.  Solubility of citric acid in ethyl acetate is over 50 mg/gram.

If the solvent is still cloudy you can leave it alone, or you can aggressively stir and that should immediately cause xtals to precipitate from the solvent.

Loveall, one thing we might advise in the tek for first-timers is to aggressively stir after adding the citric acid to get quick xtals.  These won't be the big, beautiful xtals that you're getting in your latest experiments, but I think adding citric followed by aggressive stirring is more reliable.  At least that's what I've found in my successful runs.  Slow diffusion to get big xtals is a more advanced process that can be attempted after one has had some successful aggressive-stirring runs.  Thoughts?