Can I place a wedge under one side of my pot to even put the canopy of my plant? I have it trained growing at an angle and if I put something underneath it the whole stalk becomes horizontal
You could, but it's also likely to affect how your pot drains when watering. It will funnel water to the low side and the higher side may not get wet at all, at least on the bottom.
I would let the plants do their thing, having the pot crooked would make drainage of water act odd.
Or maybe just use some training or a net to even out the canopy.
Good luck!