Many of my pictures are taken in Chester or other cities where I think there is such a wealth of subject matter, which is good as my budget can't stretch to a trip to the Rockies! My panel even included a couple of natural history shots, an area I was never interested in before, but I tried to vary the subject matter as much as possible. Being a member of such a lively camera club as Chester is certainly stimulating, and makes me think of new subjects to take.
For those thinking of trying for the LRPS it is essential to look at a panel as an entity rather than a collection of individual photographs. The LRPS requires 10 photographs and I elected to have 2 rows of 5. I knew a friendly ARPS (my father!) so I took all my decent photographs (about 24) to his house and laid them out on the floor. We came up with 2 or 3 possibilities but some needed re-printing (either because they could be improved or just cropped differently) and I also thought of some pictures I had taken but not printed which would fit in. We subsequently met up about 3 or 4 times, trying different permutations and gradually the panel you see evolved through honing and ruthless pruning. The original panel did not contain the fungus or car pictures, but these seemed to fit in better than others I had initially selected. Also the positions of the photographs were often changed to give better balance. I am indebted to John Faleur ARPS for his invaluable help in creating this panel.
So why don't you have a go! It is a very rewarding and challenging exercise putting a panel together.