There are a few different ways that you can adhere pictures to wood. One way is to use glue. You can either use a glue stick or white glue. If you use white glue, you will need to spread it evenly over the back of the picture with a brush. Then, press the picture onto the wood surface and hold it in place for several minutes until the glue dries.
Another way to attach pictures to wood is with double-sided tape. This method is similar to using glue, but you will apply the tape to both the back of the picture and the wood surface. Press the two together and hold in place until the adhesive on the tape dries.
You can also use small nails or tacks to secure pictures to wood surfaces. First, decide where you want to place your picture on the wood. Then, mark lightly with a pencil where you will hammer in your nails or tacks. Next, holding the picture in place, drive in your nails or tacks around its perimeter. Be sure not to hammer them in too deeply so that they come through on the other side of your picture!