First Time Builder
I just hate to damage plans at all - if they are folded unfold them and roll them the creases will fall apart after a while
then take them down to kinkos and have them copied about $3 per sheet
use the copies and you can cut them to a more manageable size
spill glue on them, whatever and the originals are available for new copies
it's well worth the effort and cost to save your original plans
tracing any parts that are not on the plans is a good idea mark on them the type of wood, thickness, and hardness
it will help if the plane hits one of those pesky gravity holes and is worth repairing
good luck and happy building