How to change app icon from Xamarin's pre-made app icon to your app icon?

I've read a lot of tutorials on how to change the image to my app icon. Others said put the images in all drawables folders.  So I did that and the image is blurry.  I read that drawables are for images used in application and mipmaps are for launcher icon(it is the app's icon image). I copied the image to all mipmaps and still blurry.  So then I read to delete and mipmap folder with v26 on it. I deleted it and now the app icon is not blurry.