If you used the editor, I think you noticed the image feature doesn't work for uploading images.
here I will show you how to do it.
There are various types of emojis out there you can use. also, there are lots of icons that you can style to have a prettier post.
If you want to write better posts you should read this post.
If you know HTML you can add that to your post with the editor
Here is an awesome auto highlit.