You are missing Guardians of the Galaxy #3 newsstand edition. It is going to be #3f (that variant is the next one available). I already entered it into my database, so I’ll show it with the front cover, that way you can have the bar code info, too.
Hi, unfortunately we can’t use the size of what you send. Could you post the original or a new one?
I unfortunately do not have my collection well organized. Sorry, will not be able to find anytime soon.
So where is your cover image coming from?
I have the pic from a former phone entered into the CLZ app. That’s where I pulled the image from, from the app and a pic off a former phone. Sorry!
This has been added now! Thank you for posting. Next time, please post the full image first 
If you don’t have the image anymore here’s what you can do: tap the comic on your Android phone, then tap Edit.
Now go to he COVERS tab, and press/hold on the image. That will allow you to save it to your camera roll, and then you can upload it here!
Yes! Added thanks to your picture