"Something everyone else finds hard to draw but you enjoy"— q.20
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Not quite projects, I guess? But I did have plans for tons of animations dating from way back when I was a kid — some of them centred around my ocs, others centred around whatever my fixation was at the time. I was very much into animation memes as a kid lol (And still want to properly learn animation, hopefully this year!)
Other than that, I've had plans for games and things of the sort — the one that survived in my brain for the longest being a story-driven action game set on a cyberpunk-ish/apocaliptic-ish (think Stray, Horizon:Zero Dawn and things of the like) world in which machine and man coexist. The main character (of which the player would take control of) would most likely be an android/bot of some kind that works as a bounty hunter in exchange for parts and memory drivers. I never decided on a proper conflict for him though (one of the ideas was that he wanted to find out whether he was only a robot or someone's consciousness put into a metal shell — and the existential crisis that would stem from that), nor proper mechanics for the game, so I shelved the idea. One of the 'villains' I thought up for it had it's whole concept around wanting "the hands of an artist" and "the mind of a writer" despite being only a lower type of bot without creative capacity. It then takes that wish and those phrases a little too literally. I could elaborate further but ...think of that what you will for now :p
Other other than that, I've thought up webcomics, books, animated series, but none of them had any plot. They were mostly just whatever I daydreamed before sleeping. At least I got some cool ocs out of that!
For the second question...HANDS. Kind of a basic answer, but I guess since I interacted a lot with art communities since I was a kid and specially saw how many people complained that drawing hands was difficult, I fixated on learning them before anything else lmao. I wouldn't say I'm a pro at them...? specially if I lack any refs, but I like drawing them nonetheless :p