I thought it was to easy, but I guess I get a lot of practise from testing my scenios over and over again after every change I make. What do you think I should do to make it easier?

Im making a minecraft because I get bored sometimes and want to challenge myself, therefor I set myself a challenge to make a 2D version of minecraft. Plus, couldn't you say minecraft is a rip off of terraria because terraria was made first.