Any creative ideas for an art room at home?

We do not currently use the front room of our home. It’s an odd shape to decorate functionally. 100 years ago it was an exterior front porch, and now it is walled in. It runs the entire length of the front of the house, but it is probably ¼ in depth as it is long. Basically it’s a very long and skinny rectangular room. Three walls are completely covered with windows (but it is on the wrong side of the house to be a sunroom). The other wall has 2 sets of french doors, making wall space VERY limited. As it was a porch, the floor is gently sloped towards the front – so placing tall furniture is nearly impossible, it won’t stand up without leaning unless it is quite bottom heavy. There is a picture of the room (poor quality cell phone pic, but you get the gist of it) here.

Now, since we are not using the room for anything, I would like to turn it into a work space. I do a lot of painting, drawing, and sewing.. and I’d really like to stop doing that in my kitchen. I hate having to drag everything out and carry it back every time I want to do a project. What I need are some creative ideas for utilizing an awkward space. How can I make it my own? I need attractive storage ideas for paints, brushes, spools of thread, lots of fabric, as well as a place for at least 2 sewing machines. Right now it is painted all white and needs quite a bit of work as a general room. It’s been pretty neglected. I had hoped to keep it white and decorated in very neutral colors, so that my environment doesn’t interfere with whatever creative work I’m doing at the time. But I am open to color suggestions, furniture ideas, storage ideas, and definitely window treatments. Sorry this ended up being so long, but I appreciate any ideas!