Feedback on proposal

README.md

@@ -1,21 +1,42 @@
-# (Drawing project)
+# Solar System
-
-(
-This is the README file for your drawing project. 
-Replace all the text in parentheses with your own text.
-It's written in a simple language called Markdown, 
-which allows basic formatting. 
-)
 
 ## Description 
 
-(Describe your goal for this project. If you want to link to an 
+For my project I would like to create a drawing of the solar system that is 
-image, move the image to this directory, and then use the following syntax:
+to scale that includes the planets, the sun, and our moon that rotates for 
-
+scale as well. I would like each planet to look like itself as well
-![Description](filename.png)
-
-)
 
 ## Planning
 
-(Include your planning here, including your project milestone.)
+The different paths that the planets move in can be repeated since they travel 
+on an ellipse.  A smaller milestone for this project would be to create the 
+earth rotating around the sun with the moon rotating around the earth. 
+
+## Feedback on proposal
+
+This sounds like a fun, potentially quite ambitious project! Make sure that 
+if you find it's harder than you expect, you set yourself reasonable expectations
+(and get help from me if you need it!)
+
+Depending on the level of mathematical sophistication you are planning to use, 
+this may be a project where it will be important to write helper functions.
+For example, it could be a good idea to write a re-usable function which moves the
+turtle to the correct point on an ellipse. This would need to be parameterized 
+with something like `go_to_planet_position(major_axis_length, minor_axis_length, theta)`
+assuming the ellipse is centered at `(0, 0)` and its axes align with the
+global x- and y-axes... otherwise you probably need more parameters. It's do-able, 
+but if that feels like more challenge than you want, consider simpliying. How about 
+working with circles instead? :) 
+
+A few other notes:
+
+- By default, turtle encourages you to use the turtle's reference frame (e.g. 
+  forward, back, left, right) instead of a global coordinate system (x, y). 
+  Think about which reference frame you want to use... as math gets fancier, 
+  often the global coordinates start to be easier to work with. 
+- You will definitely want to write your program in a way where you can test 
+  out individual parts and make sure they work. The 
+  [superturtle no_delay](https://superturtle.readthedocs.io/en/latest/movement.html#superturtle.movement.no_delay)
+  function will be helpful, allowing you to instantly draw so that you can 
+  more quickly see whether something is working. 
+