/ic/ - Artwork/Critique

I spend a shitload of time trying to make things work in a drawing and I always get stuck to correct things, everything is fucking guesswork specially rendering. It takes me months to finish a piece. Why the fuck am I so bad and talentless despite drawing and practicing so much and actually finishing stuff?! How comes everyone attains a shitload of progress and I'm still stuck at every single step years down the line. Just draw was a lie for me.