Nyahallo! I have some notes about your arrow in this image. Make sure to give it a look. In branches exercise, the mark comes out a bit shaky and you don't show proper degree shift of ellipses for most branches. Looking at this video, you can see the ellipse closest to the viewer will be narrowest and it becomes wider as it travels to either side. Most branches have ellipses with consistent widthness/degree and for the T-shaped branch, the main branch transitions from narrow -> wide -> narrow for ellipses.

Moving on to your plant constructions, they do come along pretty nicely as they all feel like a solid, 3D object and the petals of each flower construction flow fluidly. I have some notes about each construction however:

For the 1st construction, there are a few things I want to point out and they will be color-coded in this image:

• For red, the branch's edge doesn't connect to the ellipse which undermines the solidity of the construction. The ellipses serve as a cross section of an object and therefore, they should cut through the entire width of it. If you happen to draw an ellipse too big or too small, you should still stick with that size and try to draw branch's edge that meets it, similar to how you would tackle a mushroom.

• For orange, the flow line serves as a spine of a leaf and it reaches the entire length of the leaf. In the construction, there is a gap between the flow line and the end of a petal.

• For blue, the sections I circle look subtly thicker which implies they appear in the front. This results in an upward bend of the petal instead of downwards like the demo's referece.

For the 2nd construction, you make the same mistake as red that I mention earlier. In additional, you don't seem to follow step 2 of branches method for the right side of the mushroom as the second line from top to bottom doesn't start at the ellipse but lower.

For the 3rd construction it's still the same drill, everything will be color-coded in this image:

• To create the illusion that the disk of the flower has a hole in the middle, you can add green lines that connect top & bottom ellipses and and additional blue line-weight since this area overlaps with other lines.

• At first it looks like the additional contours at the sides of a petal are there to show the thickness of it but after looking closely at how orange connect to the disk, the sides of the petal looks like they curl inward like the additional drawing in the bottom right corner. It is unclear which is the case in your construction. Can you provide the ref or the name of the plant so I can have a look at it?

For the 4th construction, if you look at the plant from side view, the stem doesn't connect to the center of the disk (see this image). You also attempt to alter the silhouette of the leaf by adding an additional blue mass and then adding edge details using the new edge.

That's everything I want to cover here. Don't forget to add Lesson 3's exercises into the warm-up pool. Good luck on Lesson 4!