Eastman,
Meticulous is the right word. Every time I get in a hurry, I screw up my process! Just last weekend I decided to skip a step making an RTV mold for a new soft plastic idea and I ended up with a ton of small bubbles in the mold!! There went $20 bucks worth of silicone!
Ask anyone on here that has built lures for any length of time about their "rejects" and they'll tell you they have a box or something full of them!. I have one that I was really proud of until the last step and I screwed it all up by dropping it. My wife thought I got hurt in the shop that day cuz I was yelling and cursing so much.
Don't forget that you don't necessarily have to drill holes to tank test your ballast. You can just attach the lead to the bottom of the lure with a rubber band at first.
Finally, congratulations on catching a fish on the lure you created! It's a great feeling isn't it?