Covering is easy if you take your time.

Apply covering from the bottom of the tail section and finish with the top front of the fuselage.

Work from the outside in on the wings, bottom first, then top.

Cut the big pieces of covering you'll need from the roll first. You can then use the scraps to cut out the smaller pieces. This helps eliminate waste.

Cover all inside corners with small strips (1/4" on either side of the corner) before you cover the rest. This will help ensure the corners are sealed.

Use the heat gun more than the covering iron to shrink the covering. Use the iron to seal the edges only.

Get the covering tight when you seal the edges, but don't pull so hard you make life hard.

Stretch covering over complex curves. Don't try to shrink it over. Covering stretches as well as shrinks when its hot.

Keep lots of new razor blades handy. I've found that scraping the edges of the razor blades with another blade helps extend their life. Turns out blades don't get dull from cutting covering, rather the adhesive appears to build up on the cutting edge.

Take your time, plan your work, and realize your first covering job is a learning experience. Have fun

Brad