>>1963270I don't know if this is your problem, but take a look at my dotted lines. They're like this because I didn't rasterize the shape layer. If you do rasterize the shape layer, then do the steps at 1:25 you run the risk of deleting parts of the render you don't want to delete like bits in the shape.
Typically the residual outline you're getting is because you've selected the render layer (CTRL + Left-Click) and deleted the parts you don't want. What you should be doing is selecting the shape layer (CTRL + Left-Click on layer thumbnail), inverting the selection, and with the render layer selected (NOT CTRL + Left-Click) deleting the parts you don't want.
If this doesn't seem to help, record a video or something and link it this way we can see exactly where things are going astray.
