This is great. The shading on the egg white, particularly at the edges, make it feel very 3 dimensional. Same with the highlight on the yolk. You should be very proud of this. I wish I could give constructive critique, but I'm a beginner myself. I don't know how to make you better, but I don't think you should be embarrassed about sharing your stuff. This is a damn fine egg. :)

The shapes and colors look all right for me. But what I would do ist to get rid of all these little white spots that shine through so it doesn't look as sketchy and could help to convey realism. Sincerely, Giuliano

That’s beautiful and it’s making me hungry. What were the results of your experiment? The highlight, mid tone, and form shadow on the yolk are super realistic. The egg white is goopy wet also so I’d expect to see highlights in places. Regarding not sharing “bad” art, @Stan Prokopenko mentioned on the Draftsman podcast something to the effect of ‘it’s what you’re here for’. That struck a bell with me and I decided to join Proko in order to learn by getting out of my comfort zone and getting some practical advice from fellow artists. Seeing your post made me feel less afraid, thanks.