1) If you don't want to get hunch-backed and have shoulder, pec and triceps tendom problems, assure you get ATLEAST as much pulling as pushing exercises. Or with other words, train ATLEAST as much of your upper back as your chest. So for every push-up you should do atleast one row, pull-up, chinup or whatever. Also, try to get ATLEAST half of your upper back work from horizontal rowing (examples: pulls (deadlifts, snatch pulls, clean pulls, high pulls. They're static horizontal upper back work, and best exercises for upper back development), dumbell row, barbell bent over row, seated cable row), as you're a beginner.
2) For appearance, you should also have some core work. Here's a good link for abs:
http://www.christianelamy-muscle.com/abdoseng.html I like the serratus crunch very much. That coupled with basic weighed crunches and you don't need anything more. Also do some work for your lower back, again to not get any health problems. Something like back raises for example.
3) If you don't want to look totally silly, you should train your legs too. Don't worry, they won't grow too big, and with good leg work you can drastically increase your performance on sports, if you're doing any. And for a newbie, I would strongly recommend unilateral leg work (e.g. lunges, 1-legged squats).
Now, if you take any of my advice, you'll notice that you can't be hitting everything so many times a week. I would go as far as to say that you should drop one day out as I suppose you're a total beginner. Then you could do something like every other training day an upper body day and every other day a lower body day (legs and core). That way you can train intensely enough, as you'll get enough recovery.
Hope I was of any help, and good luck with your goals,
vp