Blue's Cube survival

This is my first map. The goal is to survive as many days and nights as possible before dying from starvation.
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The goal is not to escape. There is just flat land below the cube.
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Some achievements. Beating all the achievements is basically beating the game.
*Make a house
*Create a fenced sheep farm
* expand the cube. The expanded cube does not have to be made out of glass.
*create a fenced pig farm
*create a giant wheat farm
*create a bed
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Golden achievements. These achievements are not required to beat the game.

*create a melon farm
*create a fenced cow farm (seems impossible yet it isn't)
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Additional Notes

Because this is my very first map, i am not open to any rude criticism.