Hi, there.
I already have a ongoing project which has some parts using a screenshot.
If you are interested in me feel free to contact me.
I have one single question: what who assures me to get paid if i work remotely on your computer?
Maybe when i finish it 99% you close my connection and disappear ... so i don't get any money.
This doesn't seem to be too fair.
On the other way, it's simple: i make the app, send it to you, you test it, and if you like it, you pay for it.
After i got the money, i send you the source code too.
This is the fair way.
btw: freelancer.com has a application wich counts the time worked and makes screenshots, so you are able check if i really worked on your project or not.