The first one gives a gloomy feel. Not to good for shooting the subject but maybe the plant isn't the subject ur shooting. But the mood. 2 the subject I think would look good with a little more of the deck but I like it. 3 is nice and simple.
IMO for #2 the colors of your subject are matching nicely with the environment so that's a big plus working for you. Placement of the subject is not so great. I'd have turned the watering can 45+ degrees toward the camera so you could see more of the part where the water would come out.
Also you could move the can further back to the right - I think the light there created a nice mood for still life.
#1 hmmm - a but dull. Not a keeper. Hard to tell what your concept was in that one.
#3 also appears a bit uninspired. Simply a shot of a game controller - nothing more, nothing less. Try to play more with light and contrast or DOF.
Well I should have commented in my last post that while I like the watering can, I may have played with different angles to shoot it.
BUT...I was not there to see what a situation you are in, so I cannot be a judge.
I like the can the best. It is more interesting...and I like the colors in it.