yes good picture in deed, i also don't think its too dark, the window is good placed in the middle and the spider almost in the golden cut(is is called cut?) well you know what i mean.Additionally are many lines from the object parallel and diagonal which makes it more intresting.

It has somewhat dangerous in it, a spider in the house almost as if it just came from outside what you just see blurred in the background; And then the sharpness of the spider in contrast to the peaceful background.

Good Shoot,apart from that id prolly smashed the spider in the first shook,instance