Tell us about yourself!
The final product looks good but there's not enough information here... what is a "C shaped bracket" and where is a photo of it? Are you referring to a wall-mounted adjustable shelving leg (or standard) - with a channel shape? Personally I would find it awkward to handle a piece of plywood after pulling it out... never mind two... especially with those staggered edge pieces. The flush-mounted result is great though.
Large Rotisserie Pit BBQ
The CHICKADEE 9000 - Coffee Cup Bird Feeder