When I dress a tree I add items in groups. Greenery stems first. Berry stems next. All of the red ornaments next. Then all of the green ornaments. I can keep track of balancing colors better this way.
House by JSD has a great video (in supersonic speed) to show you how they do a tree. House by JSD a Lexington Design and Floral Company. I love their work! Please visit their website at the link above to see some really great design ideas. You can also purchase things by calling or emailing them if you live too far away to go to their shop.
My tree is nothing compared to their tree(s) but I try. I will probably tweak my tree a little as the days go by, but I wanted to show go on and show you my start.
When we lived in the larger house I often had a florist come to my home to work on my tree. Then as time went on I watched and learned and decorated my own trees. Did you know...it is a good idea to put some ornaments inside the branches to create depth with your tree? Don't just hang your ornaments on the tips of the branches.
We put the tree in our front hall this year, so that it could be seen from the front of the house by passersby.