I do it a little differently... or maybe a lot differently.
1. How to...
It's easy but a bit tedious and time consuming. I use a word processing program you could use a powerpoint program as well. I use basic shapes to make the built-ins in the room and move them to where they belong, they're the gray shapes. The greens shapes are the furniture, with the exception of the students desk. I always like those to stand out.
2. Whole Group
I think about which area has the most wall space, that's where I need my whole group rug to be for posting and referring to our anchor charts and posters.
3. Wall Space
I designate certain walls for certain subjects. It all depends on the subject and how much wall space I think it will require.
4. Classroom Library
I like to choose the space in the room that has the most length and counter space or space to add low shelves. I teach kinders so the library can't span vertically unless it's two or three shelves high. Besides, book shelves taller than that could take up to much precious wall space. My library typically goes under the white board or on the cubbies under the windows and word wall. The reading nook is not to far.
If you don't have the shelving you could create your own, like this one under the window on the wall with the cubes and the plywood...
5. Small Group Area
I think about where my small group area should be... away from distractions like computers and windows. The little window behind my small group table opens out to the back of the school so it's not a problem.
6. Other Furniture
I add other things like the teacher easel, reading nook, bookshelves, etc, after that, the students desks go in front of the white board for another whole group area.
7. Daily "5" or Centers
I think a lot about where Daily 5 areas will be, based on what the students will be doing there.
For instance, in the retelling area the students use big books, sentence strips on pocket charts, and our read-alouds, to retell familiar stories with puppets. This area is on the rug especially because of the big books!
I find that kinders cannot handle using big books on the easel they can't handle them on the rugs for that matter either but the books are safer there, they show less wear. They also use the puppet theater here and nursery rhyme/song charts on the easel.
Reading to someone is a community activity so those students gather in the reading nook. Here are photos of last years reading nook.
Read to self is strictly independent so the students sit in their seats or on pillows and rugs on the floor. I found this picture on pinterest and I'm going to give it a try this year.
Did you notice that I don't have a word work area? That's because during independent reading time I want the students focused on reading and using the skills they've learned. There is a separate block of time that is devoted to whole group/small group word work. I also do word work during some guided reading days as well.