Welcome. For an experienced wood worker/furniture builder no challange at all. There are some tricky angles in Airstream. I do not believe mine has a right angle in it. Remember measure 4 times and hopefully will only have to cut once.
WBCCI 10656 Southeastern Camping Unit
Associate European Unit
2006 Safari LS 23 ft
Formerly 1964 Bambi II
"I got a fever and the only prescription is more cowbell"