I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the
Blender Artists forum and I'm Community Lead at
n8n.
You didn’t do much thinking when tracing the glass outline. You need to trace a cross-section, not the image like in photoshop.