You got the right idea, @Sajal Khare! Right now it would be very useful to work on your pencil control, specifically with searching lines. Some of your drawings here have a lot of repeated lines of the same darkness, which gives them a 'hairy' appearance and makes them difficult to read. Since we can't always find the right line the first time, we will have to place some lines before we find the correct one. If you use the same pressure for each line, the result can be a bit jumbled. If you start lightly and only darken the correct line, the lighter lines you put down before will start to fade as you place more correct lines, like in the GIF below. Hope that helps :) Keep up the sketching!

You are definitely not a beginner

Hey this isn't really a critique but smoothe out your darks they create unnecessary noise which will can be a bad habit he tough one to break

Awesome

Great job separating the dark shapes from the light shapes! Because you grouped the majority of dark values together and the majority of light values together in an organized way, it's clear where the light source is coming from and that supports the illusion of depth. In the lighter value range, you used soft edges instead of hard edges like you used for your darker value shapes. It's more difficult to control the edges in the lighter value ranges, so just be mindful and try to contain your shapes with those hard edges. No blending for this assignment!