Art Critique
Not sure why you judged the origional artist so harshly when the criticisms you gave are equelly shared between you both, although i will admit that your art has improved compared to older pieces, the waves are probably what stand out the most to me although there is a bit of an issue where perspective is concerned. The items in the forground suggest that the viewer is looking down at a slight tilt at the individual in the water yet the waves further back don't feel as though they're getting further away, they end up looking like they're on the same plain as the waves in the foreground. It ends up taking alot of depth out of the scene and ends up looking flat overall which also takes away from how well the props in the scene are coloured.
Personally i would made the individual in the water face towards the hand that is reaching down and have her arm reaching for it as opposed to the awkward manner of trying to force it into an awkward direction, the parallel of the two hands both being viewed in the same pose feels kind of boring as opposed to having them in different poses to vary up what the viewer is seeing. The hole in the hand of christ reaching down should be made smaller than it it currently is if you're not going to realistically portray a wound of that diameter.
As far as symbolism is concerned i'm not really sure what the phone, bottle, bucket and can are meant to represent without having to read the description of the piece. The piece needs to be more prominent with how it portrays its message to the viewer, from my perspective i only knew what certain elements were meant to represent after reading the description which means it isn't clear enough from looking at the image alone. The way you describe physical abuse to being an alcoholic gives off mixed messages seeing as although it is meant to represent a parallel between the way you felt in that moment it tends to also give the message that you yourself are an alcoholic or your abuse was caused by someone who was.
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As far as the artpiece this was inspired by i'm not sure if your description is justified in the way that you describe it, your critique of it did seem to have a condescending air about it considering the similarity between your skill levels. Saying "it's not striking and it's not artistically competent" tends to be more insulting than helpful which is probably why he replied to your critique in such a negative manner, any helpful critiques beyond that point go out of the window due to the way you decided to brand his artistic expression as "incompetent".