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Filters are never really taken as art, likewise me. I just love using my ink to express myself. I like to see the development processes from start to finish without using any computer generated effect. Just the flow of my ink and the results it generates in the process gives me joy.
However, there are those who love using filters and take it as art. I'm not a judge.

Unfortunately I don't have the skill to be able to sketch something... It's actually something you've got to practice quite a bit.

Yeah, started practicing art professionally around 2013.

It's all about learning and practicing provided you have the passion.