I have 15 years of experience writing desktop and web applications for Windows.
If you are OK to use .NET as a development technology, then we can proceed.
We should agree on total work, delivery schedule and product specification before commiting to development (the picture you put in the job listing is of too low resolution to deduce anything from it).
I can work 20hrs /week and deliver the code and documentation on time. I also prefer delivery milestones so we can both see that we are right on track.
If you are interested, let me know.
Tvrtko