You need to work on the grass, try taking a tutorial. Also add a sky in. And I dont mind the birds, but I think you should change their colour to white, with a gray or black outline around them (but not a strong one). The flower in the top corner dones treally make any sense to me so I would take it out ^^'' And the scan is not coloured, which doesnt fit the rest of your wall.. So either colour the scan, find a different scan, or change the rest of the bg to the same colour tone as the scan. Good Luck! ^^