Hi Suze, i think they are a little non descript and as you said, random - but here are my thoughts on them
1. Fun capture but white balance is a bit off and could do with a sharpen.
2. A bit nothingly to me, sorry
3. Good canter shot just a shame he was going away from you, it also has a wonky horizon and some bits that need cropping out.
4. Not a bad shot but i dont know lots abount landscape photography
5. Best of the bunch, nicely exposed and nice crop