Clearer instructions

I was unclear on how to upload a file and found the instructions oddly worded. Also fixed a missing word in 3rd 'About gists' bullet point.

content/github/writing-on-github/creating-gists.md

@@ -33,7 +33,7 @@ If your site administrator has disabled private mode, you can also use anonymous
 You'll receive a notification when:
 - You are the author of a gist.
 - Someone mentions you in a gist.
-- You subscribe to a gist, by clicking **Subscribe** at the top any gist.
+- You subscribe to a gist, by clicking **Subscribe** at the top of any gist.
 
 {% if currentVersion == "free-pro-team@latest" or enterpriseServerVersions contains currentVersion %}
 
@@ -55,7 +55,7 @@ Gist supports mapping GeoJSON files. These maps are displayed in embedded gists,
 
 ### Creating a gist
 
-You can also drag and drop a text file from your desktop directly into the gist editor.
+Follow the steps below to create a gist.
 
 {% if currentVersion == "free-pro-team@latest" or currentVersion ver_gt "enterprise-server@2.19" or currentVersion == "github-ae@latest" %}
 {% note %}
@@ -70,7 +70,7 @@ You can also create a gist using the {% data variables.product.prodname_cli %}.
 3. Type an optional description and name for your gist.
 ![Gist name description](/assets/images/help/gist/gist_name_description.png)
 
-4. Type the text of your gist into the gist text box.
+4. Type the text of your gist into the gist text box. Alternatively, you can drag and drop a text file from your desktop directly into the editor.
 ![Gist text box](/assets/images/help/gist/gist_text_box.png)
 
 5. Optionally, to create {% if currentVersion == "github-ae@latest" %}an internal{% else %}a public{% endif %} gist, click {% octicon "triangle-down" aria-label="The downwards triangle icon" %}, then click **Create {% if currentVersion == "github-ae@latest" %}internal{% else %}public{% endif %} gist**.