Okay, I'm a noob, but, sorry, I gotta throw down my 2 cents on this one, Nate, especially after seeing a slew of stunning images on your website: screw what others "think" about whether or not its a keeper. That's your decision, your art, your integrity. I would never ask anyone that question - "should I delete it?" - again. Period. That question is dangerously close to "do you like my photo? do you like my music? do you like my writing?,does Bob Dylan have a good voice?, etc., etc., and that's a road - just my opinion - no artist should ever walk down.
The art world sometimes creates the apparency that approval or permission or agreement is needed. (The world of science has a similar flaw - did it matter how many people agreed with Copernicus that the Earth was not the center of our universe?) It's just a control mechanism: "Ahem, well, yes, Nicky, but the earth is still the center of the universe until The Academy decides otherwise." "If I were you, Joe, I'd go and shoot another 4 - 5,000 frames and then take your best 5 shots and submit them to a juried exibition and see if you're accepted, and if you are then keep doing that and in a few decades you may get some honors and then you might be able to get a local gallery to take your work and after you're dead there's a chance your descendants may receive the acknowledgment and reward you so richly deserve." No. If it meets your standards and communicates effectively by your decision (even if the shot was taken when you stumbled and accidentally tripped the shutter), then that's all that's important.
Now, technical expertise? That's an entirely different matter. "How do I eliminate/lessen this shadow? How do I get ALL of this in focus and still leave what's just behind out of focus? What lighting technique works best for this situation? I don't like this about my photo - what could I do differently?" Ask away. And certainly listen to technical data: "you could increase contrast by doing X which would make Y stand out a bit more"; fine - that's a technical datum which you can apply (if you want Y to stand out a bit more) or reject (if you don't). How different is this from: "Your photo doesn't have adequate contrast". Well, I don't care if that opinion comes from the worlds most renowned macro photographer - it's an opinion and nothing else.
Okay, I'll get off my soapbox.