Find an Aerial Photo you want to copy.
Hit the "Ctrl" & "PrtSc" buttons at the same time(Control + Print Screen).
The photo is now copied to your computers clipboard.
Open the "Paint" program in Windows.
Click on Edit.
Click on Paste.
Then the first thing you should do is hit the "File" then "Save As" buttons.
Save the Photo as a .JPEG file type.
Then Re-open the "Paint" program.
Hit the File button again and then hit "Open".
Find the Photo inthe "My Pictures" folder on your computer and click on it.
Then edit the photo the way you want to adding any features with the tools in Paint.
Hit the "File" button again and then "Save As" again forthe updated photo making sure you add the (2) after the file name.
This gives you a un-edited copy of the photo to go back to make any changes. Also saving the updated photo as a .JPEG file type makes it easier to upload to most photo hosting sites.

This Aerial below I did for another member here on the forums showing a place where my brother in law took a nice 8 pointer in Florida. In a later version I zoomed in closer, cropped out the edges of the desktop, and uploaded that photo to Photobucket as well.
All done with the process above...