The key is transparency make sure you front load your presentation with a lot of this is still in development, its early days but we think this has a lot of potential. Make the presentation about your key value add don't get side tracked with what you want it to do when its 100%.
Make sure you are the one demoing it as soon as the client touches it they will brake it and you will panic. If it brakes the worst thing you can do is panic it looks like its a big fuckup just laugh it off and cary on with what you can show the client will realise you know its early days and understand you are still working on it.
Then focus on business explain you have a solid start that needs a good bit of polish and are starting to build out the business explain your business value and how you intend to work with them around any issues. Explain that getting in at the ground level will allow them to take part in the development and shaping the final product to meet their business needs exactly.
Finally talk about your business plan / critical path where you are now, known issues and where you want the project to be in the future, don't lead with this.
Make sure you are the one demoing it as soon as the client touches it they will brake it and you will panic. If it brakes the worst thing you can do is panic it looks like its a big fuckup just laugh it off and cary on with what you can show the client will realise you know its early days and understand you are still working on it.
Then focus on business explain you have a solid start that needs a good bit of polish and are starting to build out the business explain your business value and how you intend to work with them around any issues. Explain that getting in at the ground level will allow them to take part in the development and shaping the final product to meet their business needs exactly.
Finally talk about your business plan / critical path where you are now, known issues and where you want the project to be in the future, don't lead with this.