A new feature is available on Steemit; we can now upload our own personalized cover image.
The dimensions I used for my cover are 1280 pixels wide by 170 pixels tall. The height of the cover image varies based on how many lines of text you have in your Steemit description area.
I prefer to save my file as a .PNG although you can save it as a .JPG as well.
Once you have your cover image designed and sized how you want it, goto Settings while logged in to your Steemit profile. Now, put your image url in the area that says Cover Image URL and click the Update button.
To get the image URL, you can upload your image here: https://postimages.org/ and copy the image URL.
If you have a personal website, you can load it into the media folder there and copy the image URL.
Go down to the comments and upload your cover image or a screenshot of your Steemit profile with your new cover image in it, so we can see how awesome it is.
If you're having trouble getting it right, I can help you, just let me know in the comments.
I first discovered that this was possible when I read a post by @stellabelle. Here's her post about how to do this; go upvote it: https://steemit.com/coverimage/@stellabelle/hey-you-can-customize-your-steemit-cover-photo-now-short-tutorial-on-how-to-create-custom-cover