In my quest to get better at watercolors, I was having a difficult time with the paper buckling because of my aggressiveness with the water and loose expressive style, in other words, not being neat and tidy.
So I tried soaking the paper and then stapling it down to a wood board. It works pretty good and the paper stayed flat, but the paper tore at the bottom through the staples and started to buckle down there.
1) make sure you leave plenty of extra room around your eventual picture plane. You can see I can no longer use this painting as a 11×14″ because of the torn parts and when you take the staples out. With this extra paper, I will not put the staples so close to the edges.
DESERT MIRAGE paper