It Requires a lot of Attention to Detail.
From the consistency of the joint compound to taping the drywall, there are a lot of steps that require incredible attention to detail. Joint compound should be a similar consistency of warm cake icing. You won’t achieve the right finished product if you add too much or too little water.
Taping the drywall is no easy feat, even though it looks much easier than it is. Many people make mistake of removing too much joint compound under the tape, which will make the second coat blister. If you happen to do a great job on the taping, you are left with the task of the second coat of compound. Which is the most challenging part.
It’s incredibly difficult to get this task done correctly, even as someone who has a bit of experience, let alone a DIY first-timer. You have to be very careful not to damage the drywall yet, add enough pressure that the edges are feathered into nothing.