'Gone for Good' - First Render Worth Posting

Long time lurker (on an old account) posting a render for the first time. I love Blender but come from a 2D background and wanted to BLEND the two creative outlets together. I’m going through what is indeed a quarter-life crisis right now and made this image to try to express my feelings about that. Give me serious criticism, I can handle it. Some compositing tips would be much appreciated.