I think putting your artwork online is intimidating. People, strangers, or more talented artists can sit there, zooming in, starring, and pick apart my work. They have the luxury of having this digital image of my piece and they can study it for however long they please.
“The bigger the fear, the more confidence you will gain when facing it.”
The challenge is getting over that fear. While it is a very valid fear, the internet almost does you a favor. It causes you to have way more confidence as an artist quickly. The bigger the fear, the more confidence you will gain when facing it. You will probably become a better artist because of someone’s critique. Maybe you are more talented than you thought and maybe you get the encouragement you need to keep creating.