R2D2! Need ideas for Timmy's helmet!

So today we just about finished with Timmy's Halloween costume. You can see the shots of pre-construction from earlier this week here.

Yesterday I painted the top of the trash can chrome-silver and it turned out pretty nice.

From 2008 10 20 R2D2_Costume_Construction

Today ended up VERY windy! Gusts exceeding 50 mph! We ended up having to do the rest of the paint work in the closed garage, and then setting it outside briefly to dry. But the dewpoints were in the single digits today, so it dried in no time at all! Dave took over the masking for the rest of the helmet and he did a really nice job:

From 2008 10 20 R2D2_Costume_Construction

From 2008 10 20 R2D2_Costume_Construction

Meanwhile, I grabbed a pile of multi-colored Sharpies from my craft stash and got to work on the body details. I used this picture of R2D2 as the guide.

From 2008 10 20 R2D2_Costume_Construction

So here's Timmy modeling what we have so far. I recycled Jacob's white sweats from his 2006 astronaut costume. The red light on the right side of the helmet is a red safety blinker.

From 2008 10 20 R2D2_Costume_Construction

Help! If anyone knows how I can make Timmy's helmet look better, please speak now! I'm using a rolled up t-shirt to set it properly on his head, but otherwise it's just balancing there like a bobble head...