Your stand is great... what are the rough dimensions
The board the target is on is 8-3/4" X 15".
The distance from the target to the phone is 13-1/4" and that is about as close as you want the phone.
it's about 4-1/8" wide where the phone sits.
Here are a few pics to show how it's put together.
The black piece that sandwitches the phone is an old mouse pad I cut up and glued on.
There is a slot where the phone sits to let the cord go thru incase you need to charge.
folds down for easy storage