The roses paintings is above any critics coming from me personally. totally awesome work:)
For the clementines, I think the paintings are well rendered but the white pith should follow a particular pattern typical to clementines also the orange color of the bulb can be lighter and high chroma in some spots.
I may be wrong, I just compared it with clementines found here in Morocco. Clementines were created in 1902 in Algeria by French Father Clément Rodier.

Yannos, do you do any other art except still life? Excellent roses!

Nancy http://nancyparkfineart.com
All human beings are dream beings. Dreaming ties all mankind together. - Jack Kerouac

Hi Yannos!
Very nice paintings. I especially like the second one (painting peeled fruit must be very challenging, lol) and the last one because of its nice, serene colors and lovely loose style. Well done.

Yannos, I loved seeing your drawing video when I opened the du jour – the music made it so pleasing to watch it develop. Jean Sébastien is very nicely done in oil, demo was gorgeous… Would I need to brush up on my French in order to take your free class? I do a lot of sketches for paintings, but I so admire your very finished drawing – it was exquisite!

Nancy http://nancyparkfineart.com
All human beings are dream beings. Dreaming ties all mankind together. - Jack Kerouac

Your still lifes are lovely. YOu work fast and this works well with the oranges and roses. I think live models are complex, there is only so many cutting corners you can make before something turns from fast and confidently free to sloppy. Just my opinion though.