Learning Curve(ball)

I’ve mounted canvas to panel before with gel medium, and it was successful. This time, there was puckering around some of the edges where the canvas pulled away from the substrate. Now, I’m trying to remedy the problem, and it’s not fun or completely successful. Where did I go wrong? How do I do it better next time? There were more swirling questions today, as I tried to stuff gel medium in the little pockets, and not enough answers. Tomorrow will be a little further down the path to a solution, and hopefully, there won’t be steps backwards… Don’t really have time for that this week, as the deadline looms.