I had a leak in the roof of my garage in the corner. I called a professional to come and fix it, so the leak is now fixed. I was left with a hole in my ceiling inside the garage. I proceeded to investigate it and removed tons of moldy drywall. After doing this, I attempted to patch all of it up with new drywall. This is the first time I have put up drywall and I realize now how difficult it is to measure these pieces, I have a feeling irregularly sized pieces are required to make it look really perfect, while I cut pieces that were as perpendicular as I could make them.
When I put up the drywall, I realized that the pieces have evident gaps between the seams. I googled it a little, and I saw one person saying to "pre-fill" these gaps. The problem is, I don't know what the rule of thumb is for the size of these gaps. I didn't realize, but I read somewhere that it's better to prefill these gaps before taping.
I have a couple of ideas on what to do now:
1) remove the drywall by unscrewing it and attempt to cut new pieces of irregularly shaped drywall, put it back on and I am hopefully good.
2) pre-fill these gaps with joint compound, but the question is, are my gaps too large? What is the rule of thumb for the maximum size of a gap?
I am wondering if my drywall job is really that terrible, at first glance, it doesn't look like I did a good job.
Can someone advise on drywall gaps and how to handle them correctly?