So a few months ago I realized I tilt my drawings to the upper left and can't notice it at all until I flip the image. And this persists even now that I noticed it and actively try to consider that it might be happening. I'm fighting it by getting into the habit of flipping the canvas very often.

But, I'm still really curious about why this happens to me, and I wonder if any other artists watching me have noticed something like this.

I have some hypothesis:

-It could be related to how I sit, making me tilt my head warping the vertical axis as I work, this has a good chance of being the problem because I don't have a decent seat or any professional gear in my setup, and I have a damaged lower back, so I'm pretty sure that when I'm focusing on drawing I just slump my body into a bad position that at least doesn't make my back hurt. I've caught myself slumping in my seat in really weird ways sometimes because it is an uncomfortable chair.

-It could be related to being right handed, because of how much easier movements that pivot on the elbow and wrist are, but I don't think it has anything to do with this really. I can't see a pattern in this related to the leaning to the left side in the drawings.

-It could be related to my right eye and ear being pretty damaged. I was about 19 when I was working on some electrical wiring in a factory, I had finished placing a wire through a tube and I was removing the guide, which was a plastic cable that you slide in first to use it to drag the actual electrical cable with after. When the end of this plastic wire exited the tube it flung off of it and right into my open right eye, causing some damage, and has been 50% blurrier than the left eye since then. The right ear is very damaged too, I'd say it works at a 70% of the left, the damage happened after having an ear infection as a kid and not being supervised I ended up poking into it to try to get out the shit that was hurting and clogging the canal, stupid me, and neglecting parenting... I almost died a couple of times for getting sick and my parents being too busy arguing with each other to notice I was not just refusing to eat for no reason and shit like that, so more often than not I was taken to the doctor a little too late, or not at all, and then left alone a lot without being explained what was happening. Anyway, so, since my left visual and audio input is better, it might be dragging my output in that way too.

-It could be related to my screens placement. I sit and work right in front of my main monitor and I try to stay centered on it, but I have my secondary shitty monitor on the left, so whenever I need to peek at reference, social media and stuff, I look left... so it's possible that subconsciously my workspace is taking that whole area and since I'm only working on the right corner of it all, my mind tilts the drawing to the center... to the left. A third monitor on the right would help with this unbalance, but I guess I should rearrange my desktop to have the secondary screen on the right for a while so see if the art tilt changes at all.

-Finally, it could be just a natural deviation of being human and not very skilled. I just can't keep a perfect symmetry and that's it.

I really would like to know if you have noticed something like this on your own drawings. I'm talking about a clear bias towards a specific direction instead of just weird perceptual distortions warping proportions and such.