hey jsky.
as I see your pictures, it's not bad. jeans sits you well. back picture is bad, because of you used fish eye lens of your iPhone.
When I buy new pair of jeans, always I swim in them.... My protocol of new raw pair is double wash. First I wash them in slow program for 2-3 hours in 30 C. Than to let them dry, I try them and after I repeat wash with same criteria... than wear them at home around 1 hour, when they are almost dry but you can feel still little bit humidity of them. So they finish drying on your body and they settle nicely on your body. All steps I follow with measuring all sizes...
Good luck...