In the last chapter, I disclosed my secret identity as a cockney victorian male. This is a crucial step in my writing process, as it provides a dramatic effect to my descriptions.

 As I stated before, the accent provides me with vocabulary and sentence structures that I might not otherwise use. It also provides a dramatic narration when I read my descriptions out loud. Once you have decided on an accent and era proceed to write and create descriptions. 

Your story might not use your accent as the 'main' accent as a story based in North America is typically not going to have a British or Australian accent. However, it is important for your descriptions to follow your other accent. Dialogue should be based on setting, and descriptions should be more elegant and foreign to you. Once again, this is to broaden your vocabulary and help you utilize different articles such as using "Might I" instead of "Can I". I am by no means a professional writer, but this is my secret querk that always aids me.

When you start writing a description, think of the emotions your character is feeling. Are they scared? Then write down a few things that happen when someone is scared: sweaty palms, wide eyes, heart racing, maybe a scream. Are they sad? Write some reactions to sadness: head hung down, tears in their eyes, quivering voice. 

Once you have decided on what their body is doing, take the point of view into account; POV being 1st person, third person, etc.  If your story is in the first person POV (I, me, us, we), you might include some thoughts they are having and more sensory details like temperature, smell, sight, and many more. If your story follows the third person consider using words that describe more outward appearances: "His eyes went wide with fear and his hand flew over his mouth."

Of course, these are very general rules, but you can always break a few. For example, I write 87 Below in a Deep 3rd person POV. This means that I have a main character whose thoughts are known to the audience, but it is written in 3rd person (he, she, they). Don't be scared to experiment a little, but make sure you stay consistent with your POV. Your POV will determine a lot about how you write descriptions. 

In turn, your descriptions determine a lot about the pace and sentence structure.