1. First of all, there must be software for making pictures.
Photoshop (recommended)
Photoshop is commonly known as ps, and ps has different versions, such as:
Photoshopcs 1, photoshopcs2, photoshopcs3 (recommended) and so on.
2. Secondly, know the title, author, novel type, introduction (for the convenience of painting style) and where the novel is published (for knowing the size of the picture) of the object (novel).
You can choose horizontal and vertical cover. If the title of the book is vertical, the author's name must be the same (just beautiful); Conversely, if it is horizontal, the pen name is also horizontal.
The color of the title should match the color of the base map, which is called color matching.
Finally, just add something according to the author's needs.
There are many ps tutorials on the Internet. You can look at some simple foundations to improve your ps level and your appreciation ability.
You can also use Mito Xiu Xiu's to make pictures. People used to call it "destroying Xiu Xiu", but now, you can go to some tutorials of Mito Xiu Xiu, and mastering the skills is the most important.