Not counting erratic early days from 10 years ago, I've started to pixel somewhat seriously since end of 2012. I was heavily inspired by 5734L3R - a project by winged doom / 08--n7.r6-79.84. I've made quite a number of fanarts for it during 2013. People seemed to like it as well as the author himself. I've since taken it all down and currently not displaying it anymore, since I was several times mistaken for the creator of this project. I thought it was not okay to parasitize on someone else's creation.
Yesterday I finished Another Metroid 2 Remake, which put me into extreme Metroid mood once again, and I couldn't resist plunging myself into pixelling. I posted a smaller version of this on twitter, and had much positive feedback about it:

Now I feel kinda guilty about it being a total vierbit rip-off, with a bit of Henk Nieborg. Basically, two of my most favourite pixel artists. Samus sprites are from GBA games. I'm really happy with the results. Awkwardly enough, I'm the biggest vierbit wannabe on the web, and not trying to hide it too much. This style has everything I love about game art: colors, clear forms and good readability. I could store it on my HDD like many other WIPs, but I really want to show it since I love it so far.
References:
here and
hereI recently did another vierbit impersonation, but that was for April Fool's day on pixeljoint, so I've clearly stated it aftwerwards.

I started pixelling long ago because how "easy" it was, never ever expecting to become a freelancer back in the days. You can zoom in up to 600% and carefully copy it pixel by pixel. If I was not such an icompetent fool, I probably wouldn't have started doing art whatsoever

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I'm trying to get into traditional and digital HD art, taking private lessons, but it is a really, really long way ahead of me yet. I feel helpless and stupid on big canvas without zooming to those pixels. Can't really get out of mindset of doing exclusively pixel art for the past several years. Up to thinking "how I'd pixel that" when looking at real objects.
I can copy however much I want, but it won't make me a good artist, just a good technical assets creator maybe. Since it's much easier to copy pixel artwork in comparison to HD one, the question is: where lies the line between "inspiration" and "rip-off" on your opinion?