Update README.md

Author: awais786

README.md

@@ -83,17 +83,61 @@ STORAGES = {
 }
 ```
 
-## Example: Usage
+# Example 1: Saving directly to S3 via FileField
+# This will automatically use the given bucket configured in ImportExportS3.
 
 ```
-# it will save the image in given bucket.
 class PublicImage(models.Model):
     file = models.FileField(storage=ImportExportS3())
+```
+
+# Example 2: Saving a file via model's save() method
+# Useful if you need to process or manipulate the file before uploading.
+```
+class PublicImage(models.Model):
+    file = models.FileField()
+
+    def save(self, *args, **kwargs):
+        # Only upload if a file is provided
+        if self.file and hasattr(self.file, 'file'):
+            storage = ImportExportS3()
+            # Save file content to S3
+            saved_name = storage.save(self.file.name, self.file)
+            # Update the file name to the S3 path
+            self.file.name = saved_name
+
+        super().save(*args, **kwargs)
+```
 
+# Example 3: Uploading a file from a remote URL (binary download or streaming)
+# Useful for fetching external content and storing it directly in S3.
 
 ```
+import requests
+from django.core.files.base import ContentFile
 
+class PublicImage(models.Model):
+    image = models.URLField(blank=True, null=True)
 
+    def save(self, *args, **kwargs):
+        # Fetch an image from a remote URL
+        image_url = "https://www.edx.org/contentful/ii9ehdcj88bc/2SkUwC7Kf9G5I5b49hjVgu/1fa2453e92e46d980f9f99cf08a51e73/image_processing.jpg?w=435&h=245&fm=webp"
+        response = requests.get(image_url)
+
+        if response.status_code == 200:
+            # Wrap content in Django ContentFile
+            content = ContentFile(response.content)
+
+            # Use custom S3 storage to save
+            storage = ImportExportS3()
+            file_name = storage.save("deb.png", content)
+
+            # Update the model field with the S3 URL
+            self.image = storage.url(file_name)
+
+        # Save model instance
+        super().save(*args, **kwargs)
+```
 
 > **Note:**  
 > You can place these custom storage classes in any appropriate module (such as `storages.py`), and reference them in your `STORAGES` Django setting.