C-152 Walkround Checks

While doing my checks on a C-152 the other day I took a few photos of some of the areas I was inspecting. 

Incidentally, I always conclude my checks with a wide circular walk around the whole aircraft to look at its 'seating'. Is it sitting right? Something an ex RAF Canberra pilot taught me to do. He also insisted I wipe the dipstick before measuring the oil level. This is because oil can 'creep' up the dipstick and give an incorrect reading. He was a wise and very experienced pilot and although I only flew with him once (in a PA18 Supercub) I can remember his instructions as if they were 5 minutes ago!