Naming a file "Hqdefault.jpg" can make it hard to find later. Could you please give any pictures you upload a more descriptive name? Some helpful things would be the episode title, the characters in the picture, or what the picture shows them doing.
When you upload a picture to the wiki, you can give it a different name than the file on your computer. That is, unless you upload directly through a gallery on a page. If that is so, instead use Special:Upload.