I am generally very much opposed to deceptive image manipulation and consider it “altering history”. On So Many Aircraft, photographs are considered a historical record, thus editing has to be limited to minimal corrections of the original photograph (straightening the horizon, fixing exposure, etc.). See this blog post on more information about the importance of accurate captioning of photographs.
That said, I recently decided to see if I could learn some more advanced editing techniques. Since I use the Adobe Creative Cloud tools, it was time take my skills with Adobe Photoshop CC to the next level. I actually fairly seldom use Photoshop, since I find that the kind of editing I need can all be done with Adobe Lightroom Classic CC.