Cpt Batguano got it in one … you need a copy of The Gunsmith of Grenville County (available from Track of the Wolf - here's a link:
https://www.trackofthewolf.com/Categories/PartDetail.aspx/321/1/BOOK-GGC
about 45 bucks, plus the ever-unpopular S&H, but it will more than save the purchase price in parts you don't ruin and delays you don't have to endure because after reading it you will not only understand the order of the steps, but the "Why?" of the steps go in that particular order.
You should be able to neurosurgery with your chisels... I use the scarysharp method (where you put wet/dry sandpaper on a piece of float glass) … others use water stones, whetstones and the like … whatever you use, get really good at it, and never hesitate to refresh an edge or to re-strop the edge.
don't buy 'sets' of chisels: you'll end up never using a bunch of them, so it's money wasted... Instead, buy the chisels you need as the need arises, and get the very best you can afford.
cheap tools s*&^!!! not inexpensive tools, but cheaply made tools... when in doubt, ask the folks at Track, or post a question here.
"sneak up on it..." remember, there's not really a time deadline, except the one you impose on yourself, so go slow and get it right the first time. It's a process, not a race.
Have fun, and take pictures … we love pictures.
Make Good Smoke!!!
(shall we tell this fellow about the incredible addictive nature of gunbuilding … for which there is no twelve step recovery program, no therapy session, no group hugs? … nah - he'll figure it out on his third or fourth build)