Hello dear @ibtisamwaqas, thank you for doing your Assignment, you did well.

However, it would be wise to also make use of pictures of those devices as you already started.

Note: Also the double column layout is difficult to read..., it doesnt make the first picture look neat..., probably the picture is much bigger or you didnt set it well.

Its better you maintain the single

You should always attach your introductory post at the end of each of your posts.