Hi, I would be glad to help you out as I can see you are a newbie with iOS app development and Storyboard. I have designed an app for "Marine Insight" which you can easily find on iTunes store.
That apart, you can give me an image of the layout you are trying to make and I will give you all the step-wise instructions to make your app look exactly the same in all devices. Will also give you some best websites where you will find wonderful tutorials.
Believe me, you would enjoy working on Storyboard once you get the hold of the tools and methods.