|Greetings from the Critique Club!
Initial impression: Very peaceful, sylvan setting. Serene. Looks like it could have been taken in the Gatineau Hills just north of Ottawa.
Technical: Great soft light, esp in the middle ground, helps accentuate all three qualities you name. The ISO seems a little high, but you may have chosen it intentionally to help soften the shot. DOF looks far greater than f.5. Glad to see you didn't go overboard on the post-processing; I'd say you did just enough. Good job!
Artistic: Like the softness of the trees in the foreground, contrasts well with the planks of the boardwalk. Nice mixture of different types of tree, too, so you're not overwhelmed with just one species to look at! My one nit-picky thing (there has to be something ;-) is that I find myself seeking a focal point...a dog, a child, something just further up the boardwalk to help break the horizon a little and add interest to the shot. But you finished quite well, and of course obliging children and pets aren't always around.
Overall: Very relaxing picture, easy to look at, technically meets all the requirements. But I still think you may have done even better with just that little extra to draw the eye into the shot and make it linger.
Feel free to PM me with any questions,