I like the composition and crop, although I would consider removing the two small branches that exit the frame, UR and LL.
I wonder if something has degraded your IQ here -- it has a look that suggests a very "small" (as in compressed) JPEG, although the image size posts normally. Is it a huge crop? Something more than sharpness seems an issue here -- more like resolving power. Maybe in spite of the tripod and what could (maybe) be a reasonable shutter speed, there is some camera shake? A tripod isn't a guarantee of sharpness.
Looks good. Maybe do a very judicious bit of sharpening on the output JPEG. (Only sharpen a full-sized master file if you really are confident of not causing artifacts that will be enhanced with resizing from output.)