this looks awesome!! I love the composition of the fourth drawing

I should say I share your struggle exactly so take my words with a mountain of salt. Many of your points depend on the kind/type of story you want to tell. Slice of life and adventure have their own different language, noir comics and humor too, etc... Yet their is no exact recipe. One thing useful for any : every panel need to have a goal, don't waste space and time for something that do not add to the story. You can absolutely have multiple long establishing shot if needed, e.g. to show a very large area or changes in a large area. Make sure it build an expectation for the audience thought. If you feel you are struggling to know "what to put here to get to the next interesting part", then maybe it need to be discarded, be brutal for your own sake. Also instead of looking for what technic is good, maybe try to focus on something easier to grasp : idea/meaning and ambiance. You can look for movies that are in the same "family" as your story and check how they storytell and rythm everything. That could relieve you a bit at the beginning and there is no shame in taking inspiration here. One of the rude thing I learned is : start even if unsure, because you can't test what do not exist. Do a few pages, very roughly to avoid spending time on details, then look at how they articulate together. Redundancy will be easier to spot. Unwanted inbalance like too much text in one page or too many little panel opposed to the general pace will also be easy to see. Finally, have alpha- readers. Don't tell anything about the script and ask them what happen. The delta will tell you where you need fix. Also beginner tend to over-charge with info and details, it's okay to let the reader with a bit of mistery and add details on the go. I know it's probably not the answer you expect, sadly it's only with material that we could help you more in-depth... Cheers :)

Apart from looking at how others do it and what you like there: Draw a full head to shoulders, cut out the panel shape (or many shapes) from a different sheet and play around. Or you take a head photo shot and play around with crops in photoshop. That should give you an idea of what you like. It will probably depend on the focal point of your storytelling (creased forehead, shocked eyes, wrinkled nose, clenched teeth, all of those) And when it comes to panel arrangements: Check, if any line, that gets cut off by a panel border, is picked up at the next panels border. If so, it might connect the images in an unwanted way. That problem is not exclusive to head and body crops, it can happen with any line.

Hah! Drawabox is the starting line! It's the tutorial zone, you're only just breaking free of your box prison and going out into the world. Make sure you pack sunscreen. So I think the main issue here is a single erroneous assumption - "I'd imagine you do more damage to your potential career than good". I honestly don't think this is true, or at least not as true as you might think. There are things you can do now that can mess with your career going forward, but none of them have to do with drawing badly. Rather, it's things like being a jerk - and even that fades with time - that'll mess with future opportunities. There is however a reason one *might* avoid posting their work to social media, and that comes back to the things you may have seen back in Lesson 0 of Drawabox. It's the tendency for students to be obsessed with the end result of their work. Social media kicks that into high gear, causing us to think a *lot* about not only how something's going to turn out, but how it's going to be received, and the worst part is that it starts creating a clear connection between how many views and likes and whatevers our work gets, and how we feel about it in general. It quickly overshadows the joy we may have experienced while working on it, if we allow it to. Often times just being aware of this, and being in tune with how you're feeling is enough to counteract it. To celebrate your shitty drawings for what they are and what they were, and to continually fight against the bitterness that rises in us whenever we feel we haven't gotten the attention that we deserve - or worse, that we don't deserve the attention we received. If you feel you can keep that under control, and guard your sense of self worth in that brutal social media hellscape, then strap on your red cotton onesie, grab your guitar, and hop onto the roof of your weird speaker truck. It's time to ride. As a side note, I would check out the answer I gave to Pedro Kaponautas below on the topic of when the right time is to start a web comic. Similarly to you, they asked about the threshold of skill at which it would be appropriate. My answer was similar, but there are additional points that may be of use to you.

Wow, these are all great!