This email will be Partnership Agreement.
1. We (Yeahthemes.com) allow you to use our PSD (maxx) to convert to Joomla template for sale on themeforest.
2. You (Joomlatema.net) are permissible to sell joomla version as a exclusive author on themeforest only.
3. The profit of Maxx (joomla version) will split to 65% for you (Joomlatema.net) and 35% for us (Joomlatema.net).
4. Payment for us (Yeahthemes.com) will be made via Paypal when we ask for. (monthly or every two months)
5. You (Joomlatema.net) are responsible for support buyers of Maxx (joomla version), and we (Yeahthemes.com) are responsible to provide what you need for converting Maxx to Joomla version (PSD, image source, licenses).
If you have any idea about this collaboration agreement, let us know.