I agree with those who have praised your fit and finish. Very neatly inlet in spite of your self confessed lack of experience. Others have pointed out the architecture problems in this rifle. My question to you is, what did you use as a model? Good architecture has to begin with knowing before your start, where you want to go. Photos from reference material is usually all we have to go with, and there are ways to extrapolate the data - drop at heel and comb, length of forend to nose piece, placement and shape of cheek piece, as examples. From there, a design needs to be put onto paper in full scale. And one must follow this blueprint. Another valid set of data can be gleaned by examining other rifles, even though they are not Hawken rifles, for their fit to the shooter. I keep a record of rifles I build or get to hold, of all these bits of info, as well as an overall impression about the feel of the rifle. If you refer to this info, and apply it to your new build, it should make a world of difference in the overall look, and especially the feel of the rifle.
Your rifle...there is no possible way that I could shoot your rifle with a comb line that appears to be almost as high as the line of the sights. There is far too much wood in the butt stock. The butt plate is inlet extremely well. I have seen pictures of original Hawken rifles that had a curved lower line to the forend from the guard to the nose piece, but many are parallel to the upper edge. Even though the patch box is upside-down, it is well done, although I might have tried to get the hinge line more parallel to the butt plate return. If the box were on the other side of the stock, this would not have been so noticeable.
Thanks for posting the pictures, and congrats on taking on the challenge. I can see by the workmanship, that you have much potential...I hope you will continue, and I wish you joy.