A quick tip, in case you haven't been given this already by your instructor...
I was advised to practice my downwind checks whilst driving. Disclaimer - Obviously use your common sense about where you choose to practice this, especially at first! Once I got the hang of going through the checks and driving at the same time, I then tried to envisage where I needed to look to check an instrument and moved a hand in the general direction of where, say, the flaps would be. Finally, I then did the same with the radio playing quietly in the background, to get used to 'flying', performing my checks, and having to deal with background noise too. For me personally, it really helped.
