These food pieces are so amazing and these look so juicy! I love to see your studies and they always make me hungry! I don't have any grapes but an apple will have to do. Keep up the good work! 
2 months later
Maybe for the first time I put that much effort in structure of head. Usually I skip this part and that why in the end I see my horrible mistakes 
Feedback is welcomed.
How to post images to look smaller and then if you want to see the full size you just click on them.
I took sketchbook at work and exercise boring stuff at breaks. I use sphere made of styrofoam for reference.
I didn't think there was a way to cut styrofoam. I'm bothering that I don't have a proper reference. 
Very good idea with the ball! These heads and loomis spheres are looking really good to me! I am not seeing mistakes. Keep up the good work!
1 month later
This exercises help me a lot. I used to have a big problem with oval shapes. Still they are not perfect. The truth is these stuff are boring as hell and I avoided them but they are important, I had professor who said we can't draw basic geometric shapes, and I was... that is not true. I needed 5 years to understand what he meant, and... I still can't
I think I lost likeness along the way. Maybe the sketch wasn't good enough or maybe my values are wrong. This is my first head with dark skin. I started over the hair a few times and I still can't figured out. The struggle is real 
13 days later
This is another food study. It’s always seems easy until you start This is first time I use Procreate. It’s not my best work, it’s suppose to be quick study but I needed few days. I tried few thing until it worked out.
I absolutely love your food studies! I love the form and the lighting especially and the far left raspberry. I love the colors you use in the shadows, really makes the piece even more interesting! I really love how you can feel the volume and transluencey on all of these. Lovely work Niko!
Thank you! Colours are my stronger side. The interesting thing is you liked the one I haven’t use the darker colour on it. And you are right, it’s better. I was anxious to finish the piece, because it’s supposes to be a study and to make it fast. I spent too much time on it. But now I want to change a few things. I can make it better. Thank you for the feedback, it’s better when you have fresh pair of eyes
Just another study. I noticed I few mistake I made in jaw. When I made the structure it was easy to put feathers. Usually I don’t do it 
Whoah! This is fantastic! I am not familiar with shading like this but I really love how all your hatches follow the form and the contours. You can really feel the volumes on this and your values are on point! Really lovely work Nina! I think I am like you. I end up spending much time on each thing I do instead of doing many things but I think it all balances out in the end. Really nice work!
Fast sketches help to loose your art, your hand, it’s improve your workflow, It’s great exercise. And with time help you to draw faster. I had a foreign colleague in university and she said they had to finish a piece for a day. She painted really fast. In my university we have a piece for a week, 5hours 5days. That’s why I am trying it, but my paintings become ugly
8 days later
Here is it, version 2. I am happier with this one
Very lovely work Nina! I'm on my phone so I can't see them side to side but the improved contrast on the second piece really helps the read. Nice work!
Lovely form study Nina!
