Presser foot level, needle and thread guide have fallen out?

Hi anyone HELP I have been trying for two hours to reassemble the needle cotton thread guide and the presser foot lever and the screw at the side I cannot put back together I am obviously not doing things right as the whole thing has fallen down I have taken out the needle and thread guide do I push the lever to the top and screw adding the thread guide lastly the needle as all of this is not allowing me to do all three doesn't fit what a, I doing wrong help please