Following these tips, we'll turn you into a carpenter yet.
Fine-tuning a miter for a perfect fit is often a trial-and-error process. Practice on smaller test pieces until you get your miter saw set to exactly the right angle, then cut the actual parts.
Use Lumber as a Template
Tack together the construction lumber to outline the structure, square it up and use it as a giant template to do all your marking. Set it aside to do your digging and replace it to set the posts.
Easy Framing Formula
Drive a big nail at an angle through the edge of the stud. The board is now in place and secured.
Mark, Don't Measure
Holding trim in place and marking it is always more accurate than measuring, often faster and it eliminates mistakes.
Best All-purpose Hammer
Buy a 20-oz steel flat-head straight-claw hammer. No ifs ands or buts