Can we remove this one? I am going to try make it better. Yes, an unfortune mistake when using the "brightness" tool, I did not even notice that there are so many colors. Thank you! 
Of course, if you are admin here, I am not sure how this works.
Please clean the image. You have a lot of accidental colours all over it. http://yanrishatum.ru/pj/?input=https%3A%2F%2Fpixeljoint.com%2Fpixelart%2F140679.htm But other than that it looks good.
No need to remove. You can just click the pencil icon (left of heart) under your artwork, which will bring you the edit options. There you can replace the file with your fixed version.