For starters, your posture is very erect in these shots (are you maybe puffing a bit for the camera?) so the front/back balance is off by a large amount, and the strap is too short (something that can't really be corrected on a finished garment). Observe how the vertical lines converge on the lower part of the front, and how the horizontal lines lift on the side view. People with erect postures carry their arms further back so these sleeves need to be rotated back, but the plaid gets in the way of this alteration- this needs to be done to the pattern before cutting.
I'm a little puzzled because the front shot looks like your right shoulder is low (a bit of extra wadding on that side should help clear up the buckling at the waist) , but on the back view it seems your left is low, unless you have some sort of prominent blade on the left only. I would need a closer look to know what needs to be done to clear up the diagonal creases on the left.
The collar could be raised a bit, the sleeve lengths are not even, and the pockets are a bit too high.
When cropping photos it would be helpful to use the architectural lines as a guide to get them straight otherwise we have to tilt our heads to see them properly.