I found this answer. Steve had a video where he demonstrated how to make a forest scene clock.
He filled the wood with a wood pattern. The way to do it is to save a copy of the wood and then import it to your active file. First, Pick on the sample, then click on "Effects, Power Clip, and Place Inside Container". Make sure that the size of the sample wood is larger than the pattern you are making. So EASY when you know how.