My values are too muddy and I am having a hard time drawing defined planes. Any critique would be great, thanks.

So, I first drew a pear, then watched the project video. Realised that I wasn't supposed to preselect the tones. Drew another pear. Watched the pear demo, learned some new things. Then drew the portrait. Then watched the portrait demo and realised I misunderstood a lot of things earlier. So then I drew another portrait (reference photo by Andrea Piacquadio). Now I see that I still missed some important things, like double checking the proportions!

I had a second attempt (on left) at drawing my banana after watching Stan's demo. I've included the one I did before watching the demo for comparison. I feel my second attempt is a lot better, but I still need to work on achieving cleaner lines as well as smoother rendering for the values. All critique welcome!

My first thought after starting this, was why the hell did I have to be different and choose a banana lol. Took 3 attempts to get a shape I was more or less happy with. Got a bit confused with shading the values as there are so many subtle changes. Kept erasing bits and redoing them. Wasn't sure how to represent the colours on the ends. Haven't watched the demo yet. Any critique welcome!