This is the original photo
This is the changed picture
step 1: I changed the black nozzle to blue
step 2:I then changed the top side of the train
step 3: I removed the plant at the very top beside the top of the tree
step 4: I made one of the gates black 
step 5: I made one of the train blocks in the top right blue
step 6: I removed the bush beside the carpet
For all the cover changes I used the paint brush. For the item removal I used the eraser and then used the colour picker tool then took the carpet colour and painted over the empty spot.
