1.UI/UX design
UI/UX design is not a popular skill，but is becoming more and more important. UX/UI design is more pay attention and more aligned to user behaviour. Although you might not becoming a UX/UI designer, boosting your ability to do the job you’re currently in and your design will reach a higher result.
2. Image editing
Primarily using Adobe Photoshop, Illustrator , Lightroom or any other image editing software, not necessarily all, but at least you must good at one or two. These are the basic and important foundation for assisting you to improve your design skills. You can always kick start by taking a course on or offline and then improve and polish your skill by pursuing a side project.
3. Visual, typography and layout arrangement
Graphic designer need to understand how to create an easy-to-read and easy-to-use design can make your visitors the willingness to read. Through choosing fonts, logo creation, layout, modifying designs, representing figures in space with a balanced perspective, spacing, storyboard creation to make your design more professional and appealing.