/ic/ - Artwork/Critique

Just realized that I've spent those last few days drawing finished drawings instead of studying on thing I lack off and so I decided to start right now. What would you guys recommend for getting better at drawing speed, anatomy, composition, faces and character design? Pic related Is my art. Been thinking about actually finishing the 250 boxes challenge in DAB and start reading Bridgman and do gesture (regarding this last one too, can I get tips? A friend suggested to Just do the countours without even a base but when I do It my gestures look like shit)