@suuper-san
With the detail thing it's more that since they aren't thinking at first what can be put onto the paper, they run into problems. For example, there is a limit to the darkness value you can achieve on paper with graphite, which generally means you have to keep the lights in your drawing lighter so that the darks stand out.
So while the beginner probably struggles to add detail in itself, I think they are also likely to over-reach and try too add to much detail when the good decision would have been to have considered a simpler conception from the get-go. You will see this in manga sometimes, but faces are often drawn with no noses or mouths far away. It's part of creating depth, but also accepting what is too small to draw with your tool.
Interesting about the kanji thing. I'm certainly only able to draw some of the more complicated hiragana with practice as well.
You would be surprised how often artists tend to be on the upper-half of the scale in between aphantasia and hyper-phantasia. Just my experience with my peers and classmates. People are certainly surprised when I tell them I have it, though.
I think I have been able to overcome it through a strong sense of depth on the paper I developed, among other things. I also don't think I would be where I am right now in terms of skill if I didn't study art in university, or didn't have a lot of free time. When you're forced to create illustrations and artwork you learn a lot. It's strange because I seem to have grown more from it than my peers which don't have aphantasia. I still have a ways to go, though. I believe if you put a lot of effort into making pieces over time you would have a hard time not making significant improvement.
For myself, as time has gone on I have become less and less focused on being original and taking instead more from others. Sort of like a vampire. An aphantasia vampire that sucks the creativity out of everybody else
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