Too much? Too little?

I've been working on my book tonight and I find I'm stuck on a couple issues. When I first started writing, the couple of friends I trusted enough to let read my progress suggested that I add in more descriptions. I did that. I printed out what I had and went through and added descriptive details to everything I had...tried to create a picture with words so that anyone who reads it will "see" what I am envisioning as I write. Now I look back and begin to worry. What if I have added too much detail? What if the things I am describing are not done well or are too overdone? I think it's a balancing act. I find that the best way I can handle that is to print out the book on paper and making changes and edits that way. I know when I finally get finished I will look back and change a hundred different things. It feels like a constant see-saw effect. Back to balancing now! I'm hoping to finish this chapter before it's time to lay down.