Kontact, beginners can become easily frustrated and discouraged by building complications. One of my biggest jobs as a framebuilding class teacher is helping them manage their negative emotions as things go less than they desired. And sometimes me doing the hardest parts so they don't get stuck. The closer the lug angles are to your design, the easier it will be for you.

Almost all rookies make the same mistake so knowing what they are really shortens the learning curve.