I am wondering if spraying them with spray starch might help them along a bit. I always find flannel quite an informal fabric and I wonder if you might be able to spray and iron so they are crisper - IYKIM. I like shirts that you have - great colours!

Runcarla, thank you for the great inspirational ideas for styling.
Jane, spray starch sounds like it may add some structure. Good idea.

For the first one, I like the pics that have been posted so far, generally showing a white tee underneath.

For the second one, about the only way I can picture it is with a denim skirt and cowboy boots. But that is really not your style.