It really depends on your goals. Are you a body builder? Are you training for health or fitness? If you are a bodybuilder it is more common to train push muscle together (chest and triceps for example) and pull muscles together (lats and biceps), rather than biceps and triceps together. That does not mean what your are doing is wrong. You should probably add some core type movements such as planks and medicine ball chops as well.
If you are training for health and fitness I would encourage you to focus more on training body movements rather than individual body parts. You should also be doing some form of cardio at least three days a week.