My first impression was Visme seems more for businesses and less for authors. Starting in the basics tab, I see graph and stats and diagrams. Under graphics, there are lots of options, but when I searched for things like "Vampires" or other paranormal and fantasy creatures, I got no results. Photos I had better results, but still not many for certain creatures. Still, there is a good amount of graphics and clip art as well as images.
There are plenty of templates and you can make custom sizes. Projects save automatically. Me being me, it took me a minute to notice where I named my projects. I had a few "untitled" projects in my projects folder. The basic tier, which is free limits you to 5 projects and only 100 MB of storage, but you can download everything, delete projects over and over if needed.
The main perk I've found to Visme is the fact you can make gifs. It's in beta right now, but I do hope this is something they will roll out to every tier.
The only thing missing is being able to have a border around font. You can make a border, but it's a square one and not one that conforms to the shape of the element. So far, Edit is the only one I've found that does this. Something for Visme to think about. *hinthint*
Over all, the website is set up well. Everything runs smoothly and there is no lag. Downloading is easy, although downloading a Gif does take time, but that's expected. Even if you use Canva or Edit, it's worth checking out as you may find templates or images not available on the other two. And if they roll out GIFs to all tiers, it is definitely worth checking out for that.
If you want to see more of what Visme offers, check out this, this and this link to read about other features. Don't forget to tell me what you thought.