Rejected illustration

[anade]

Hello, my illustration got rejected, could you please help me to understand why? 

[Abambo · Accepted solution]

You have aliasing and other artefacts: 

[anade]

Thank you for your feedback, I'll keep it in mind for the next illustrations.

[Abambo]

You're welcome.

[Festive_epicness157F · Accepted solution]

I think it's because of an extraneous vertical stripe in the left part - about a quarter of the way into the picture.

[Abambo]

I think it's because of an extraneous vertical stripe in the left part - about a quarter of the way into the picture.

By @Festive_epicness157F

You should share a screenshot, that's more visual than your description. 

The arrow right points to the stripe, the arrow left to a bizzare glas reflection.