You can't make any meaningful comment about sharpening from a 658K JPEG. Probably the image printed at its intended size looks appropriately sharpened.
Perhaps, but putting tongue firmly in cheek I would say that unless the OP would be willing and able to provide anyone and everyone willing to comment with an image printed at its intended size, then it MIGHT be best to sharpen this
version of the image appropriately for web output... especially since this is a 'User Critiques' forum and I for one took a quick glance at the image and moved on.
The image MAY have more merit than I was willing to give it simply because I couldn't look beyond the fact that it looked like it had been sandpapered.
Now, taking tongue out of cheek, if that's the look that Tom was going for then fine, but personally it doesn't do anything for me. Others of course are welcome to disagree, and in my opinion it's fine to ask other people for input but eventually you have to with what speaks to you (or your client) because therein lies the final say.