Hello!

Arrows - Looks good! The perspective looks realistic.

Contour ellipses - Some forms have ellipses that are all the same degree so it doesn't look like the form is turning. In the ones that do change degrees, make a more dramatic difference between the ellipses so that you can really see how it affects how the form appears. Even if you can't visualize the form beforehand. Having tighter and smoother ellipses really helps, so practice a table of ellipses beforehand or something.

Textures - There are textures that really look like they wrap around the sausage, like the lettuce - which is great! Keep it up. I think you did a really good job looking at the tiny cast shadows that make each texture unique. You also made good use of the silhouette, especially in the tentacle texture which has a lot of depth. For the strawberry, the cast shadows won't just be full circles around the seed. The silhouette is good but it is difficult to tell what's happening elsewhere since all the seeds look the same. You may want to draw the cast shadows will appear in different spots depending on where it is on the strawberry. You could also try to give the seeds more dimension like in the lesson example, yours look very flat as circles.

Form intersections - Looks good.

Organic Intersections - I would give extra line weight to the lines in front. Good job wrapping cast shadows around the form.

Good job, keep practicing these exercises as warm-ups. Good luck!