I first began to add a background for my game using a tiled background, doing this allowed me to constantly copy and paste the image to make it look like an even bigger one.
I then added a 2nd background for my game which was layered on top of my first background to represent the cloud's moving in the opposite direction from my 1st.
After adding my backgrounds I then began to add a series of tile sets to represent platforms that the enemy could be put onto.
Finally after creating the environment, I then began to add the sprites such as the Player, Enemy etc.. I also gave them different objectives and behaviors, for instance the Enemy's objective was to destroy the Player, whilst the Player's objective is to get as far as it can without dying into the game.
Above is a screenshot of the game in action with the HUB at the bottom representing the Player's health bar.
Above is a video that shows the game in better depth.