I found difficulties while giving height and width, like how do I know the exact height & width of the box. I just did experiments to look like same as the image. It is straightforward. but if you are a pure beginner like me then you will find it difficult in the starting. but just keep doing it to learn & gain.
what I usually do is take the design image into Figma, lock it into a 1440px frame ( that's the value mentioned in the guidelines) then measuring stuff should be easy. It's okay though to make it approximative and focus on the main functionalities. I try to set sizes myself to put on test my Design skills as well, so if you think that the design is optically balanced, why not go with that.
