While this might seem like a scary project,
it really is just about measuring and going for it. I won’t go into TOO Much detail on dimensions and such,
because your wall is likely not the exact same measurement as my wall – but all I did was create horizontal lines up the ENTIRE wall at a decided interval – 6 inches. This allowed me to get in the most ‘lines’ between the floor and ceiling and didn’t make them too squishy. (I wouldn’t do less than 6 inches)