So I've been pitifully attempting to make my own images for a game I've made, coding wise, however I'm finding it difficult to make images the blend together well and especially hard to make backgrounds. 

If anyone has any advice, or links to useful tutorials it would be much appreciated.

I've attatched a screenshot of my game using various tile map images I've made. Some, such as the waterfall and gem, are animated.

I'm looking for anything that might help give inspiration to make either background images, tiled ground images ect...

Thank you! :) 

EDIT: So I've been playing with the idea of turning the graphics into a 'LIMBO' type game, where everything is dark and minimalistic. However, it turns out a lot of those games focus heavily on having good graphics, guess I'll find out soon...