/ic/ - Artwork/Critique

Doing a series of 10 minutes portraits to force myself to quickly get used to shapes and pick what matters, I'm very happy with this, is it perfect? No, is it decent? Wouldn't say so but it's something although it's simple I haven't earned the right to be proud of anything just yet, the ones before this one were bad references and a lack of focus on my part.
Now, I have something else to say, I'm reviewing the learning process for maximum efficiency, what should I add to my plate and what to remove?
On Hold - Eviston, Keys to Drawing, Vilppu, Figure drawing, shading, Loomis
Currently in focus - Dexterity, ovals and circles, soon to add drawabox
What's the best and most efficient way to learn right now?