Nice camera and telescope combination. You've framed the North America Nebula well and a top effort for manually guiding.
Two comments;
You're colour balance needs improvement. Boost Yellow and Magenta to bring the stars back to a white/blue appearance (this can be done for highlights only to keep the nebulosity tones). Also the image displays noise in the dim regions. Perhaps use a layer mask or the colour range tool in PS to selectively reduce noise in those areas.