If you had everything right before the short rows, you should be okay. But, as long as you're turning and working back, stopping, turning, etc. as the pattern directs, you should be fine. You can learn to do the wrap from Amy's video, it shows it clearly enough. Once you get the wrap down, you can do any short row, but even the wrap isn't necessary. If you can't get it, don't worry about it, they'll look alright in the end.