After about 8 hours or more of reading all of amazons tape and velcro products the only ones along with great reviews that I could find that would stick like crazy strong was this

I am amazed of this product's durability and strength

So that's when my friends suggested to use Velcro

Not only was my canvas perfectly aligned but there were no gaps between the wall and canvas

I used cheap multi-purpose sheers but would have been easier with better scissors

Delivery was also prompt