Somebody else already recommended you Richard William's Animator's survival kit. I suggest you to look for the chapter about straight ahead, pose to pose, and the third method which is a combination of both. That, and onion skin, will be your friends for keeping proportions.
"AlanBeckerTutorials" Youtube channel has a video about the twelve principles of animation. The part about pose to pose and straight ahead will give you more insight about that.
Something else that will help you as an animator. Act what you want to animate,imagine the action well or search for a reference and measure the time. Of course, as an animator time is something you can play, so you can increase or decrease the timing when interpreting the action as you desire. Imagine yourself as a sort of actor.
Blinks can be both fast or slow. Just be sure which you want.