Hi,
Ezra's question was what is your weakest area not tedious. Looking at rifles posted on ALR, including those up for sale, I'd say the most common basic gun making weakness I see is shaping the lock area, wrist, and comb including cutting moldings and beaver tails. The second most common is too much wood left on the fore stock. The third most common I see is shaping the cheek piece. Too big or not having a concave profile. The fourth is not carrying the curve of the bottom of the fore stock through the trigger guard area. The fifth is misaligning the return of the butt plate and the comb. Finally, engraving and carving, but they are not basic skills and I like to see folks jump in and give them a try. Takes some courage.
dave