If you are working with many images it is easier to manage them if they are stored in folders. While this isn't a standard option in WordPress there are plugins that add this facility, On of which is Media Library Folders, available as a free plugin with a Pro option.
Media Library Folders displays your media files but in a folder tree structure, as above.
Add a Folder
To add a new sub folder, make sure the folder that you want the new one to be within is highlighted. In the sample above this is uploads, which is the root or highest level folder.
To add a new folder under gents-clothes, high this, click on Add Folder, enter the folder name and click Create Folder.
Add a File
Ensure that the folder you want upload the file into is highlighted then click Add File. Browse for the file you want to upload and click Upload Image.
Move Files
If you have uploaded a file to the wrong folder, or want to re-organise your files, you can simply drag and drop them onto the correct folder.
Make sure you drop with your mouse point over the folder, not the images themselves.