Oh man, the list of my flaws is soooooo long 
Well, being succinct in dialogue is now a guiding light for me. I've really worked on paying closer attention to the dynamic rhythms of dialogue between characters in order to drastically cut back on making everything a series of pithy monologues.
Also, I'm focusing on writing with the visuals in mind so much more. I've always been driven by characters and dialogue first, but there are moments it's gotten me into real trouble when the visuals and the mood of the dialogue don't match as well as they did in my head (and by big trouble I mean- the artist I worked with already drew it, the tone of my dialogue doesn't match, and now I need to re-write the scene because it shouldn't have to be redrawn because I was being a dip. It's a fun puzzle, but it's stressful).
Finally, it's been great to be liberated from feeling so precious about how a scene should go. I've found that if a scene isn't working the way I want it to, I now take a look at who else is in the room and what else is happening (not just the main character) to I see if a change in perspective can get us to where we need to go (and sometimes I've found some real gems that way).