Hello brother.

Layer 2 solution really helps users of a blockchain in many ways like improving scalability and reducing the transaction fees. You have explained in detail about every concept and I really appreciate your efforts. Your presentation is really good.

Ali and Ahmed are two users that want to conduct multiple transactions in between them so for this they have to open a payment channel

Great example given by you to explain about to explain about Lightning Network. Layer 2 solutions like State Channels play an important role in Lightning Network.

Great Post from your side. Best of luck for the contest.