How to do these cables and make one sideways?

I am wanting to make a blanket for my Fiancees parents. I know i cant get it done by Christmas but hoping to get a lot done and make them some other things. I am wanting to do these cables with this tree.

can someone explain to me how to do these cables and make the blanket big enough for me to do 2 of each cable plus the tree with a background to make it stand out. the last two cable is the one i want to do sideways at the bottom and top of the blanket. the other 4 are the ones i want to do on the sides. i do know how to do basic cables and the hourglass i do understand its the more complex ones that are stumbling me.

Also the tree is confusing me . if someone can explain how to do it in flat not round. It says for the tree to do right to left(rs), left to right(rs), then right to left (ws), then left to right(ws). how do you do left to right (rs) and left to right (ws)? i only know how to do right to left(rs). turn then left to right (ws). but the whole pattern is confusing me.

which order would look best with the cables? I am thinking celtic, 4st cable,hour glass,4st cable, large horn, 4 st cable. tree. then the same thing but 4st cable,large horn,4st cable,hour glass,4st cable,and then celtic. unless that is to much? with the durrow cable or jungle jim doing horizontal along the top and bottom.

Cables :

http://www.knitting-and.com/knitting/patterns/afghans/celticbraid.htm

http://newstitchaday.com/how-to-knit-the-large-horn-cable-stitch/

http://cache.lionbrand.com/cgi-bin/faq-search.cgi?store=/stores/eyarn&faqKey=306

http://www.girlfromauntie.com/patterns/durrow-cable/

or

http://www.vogueknitting.com/resources/stitchionary/cables/jungle_jim

Also I am thinking either one of these in each corner of the blanket but i am not for sure if that would look good. what do you think?

Cables for corners (maybe):

Leaves:
with the leaves going around the blanket form this pattern.

Tree:

These are some beautiful cable patterns.
Basically, you want to look at the number of sts required for each motif. Work out the cable placement that you like, it’s your preference. Then look at the number of sts required for each pattern (61sts for the tree, 28sts for the celtic braid, etc) and decide how many background sts in reverse stockinette you’d like between patterns.

It’s going to be helpful to knit swatches of all the patterns so that you have an idea of how wide each pattern is with your yarn and needles.

The sideways cables can be added as separate panels, worked bottom to top and seamed sideways onto the bottom and top of the afghan. You may find that you don’t even need them with the complicated cable work in the body of the afghan.

The directions I see for the tree are:
"Note that these are half-charts. So you start at the right edge and work from right to left. Then you work back from left to right, starting at the red bar, if a red bar exists."
That sounds like a conventional panel worked flat.