I'm a beginner too and I probably don't have as much experience as a lot of the others on the DIY forum, but I might be able to help a little bit.
I haven't used cinnamon yet, but I've heard that it's a tricky note to use because of its association with potpourri. I read that a little bit can be blended with rose though.
On some websites that sell raw materials (like Perfumer's Apprentice) they list the maximum amount you can use of an ingredient in the concentrate. I've been using these as guidelines for how much I should add of an ingredient and it's been very useful so far.
Also, you might already know this, but your perfumes are going to need time to settle before Christmas if you want to give them away as presents. I wanted to make some perfumes for my cousin/friends and I'm afraid that if I don't hurry up and start working on them they won't be ready in time...
I hope this helps.