The yellow one is underexposed and "flat looking", needs contrast added in PP.
Second one is good...might look better using a B&W conversion.
Nice images
I don't agree with the first one being under-exposed.
You could brighten it a touch (and add a bit of contrast), but you have very little leeway left in the red channel.
Otherwise both are nice captures, with good DoF.
To Wavelenghth and Revi.......thank you very much for your comments........
Griddi.....