A polarizing filter would help you direct the light and thus bring out more vibrant colours.
And yes, well, I think deciding which ones are your personal favourites of an entire series and put up those is helpful to get some more specific comments. The series as such is nice. But you did not even add numbers to your pics, so it is not easy to even say "Photo so-and-so is my favourite" since it would require a lot of scrolling and counting.
What I am wondering about is whether all the yellow grass would be green in summer?