I have improved over the years, and there are a couple of places in our home where I have put up a gallery wall. Command adhesive strips have really helped--if I want to move the pictures, they don't leave any holes in the wall!
Last summer (as in 2014) we finished our basement. We had some shelves built into one wall, and last year, I put in most of these pictures.
It was a good start, but other than that, the walls were left blank.
And that's a lotta wall space!
On our California trip, I brought home cards to frame as souvenirs. Once we got home, I chose some pictures and ordered enlargements from Snapfish. I have used Snapfish since back when I used film in my camera--I have pictures from when my son was born on their cloud. (That son just turned 12 over the weekend.) And then I took advantage of all of the great coupons at Joann and Michael's last weekend. And today I used every last command strip in the house for this--the start of our new basement gallery wall.
Here is how it looks next to the bookcase. There is plenty of room to the left of the frames to add on as we go. We have many years of past vacations I can add. In fact, I ordered some prints from our 2014 vacation just today.