Contact David...
Send an email to earlecarpentry@gmail.com.
Please include in your email as much info as possible.
You can also add any attachments for example- a picture of your current space (most important) along with any inspiration pics.
Only very rough dimensions are needed at this stage. Don't worry about any angles etc, as long as I have a picture of the space. I'll ask if I need anymore info.
I should then be able to give you an idea on costings for you to consider before proceeding to the next stage.