Help me become a Professional Artist

[Jaik]

Nice to see you are still keeping up those studies! As for the matte painting stuff, try to start with a natural environment and say.. - add an additional mountain to it.

The reason why I suggest this is because 1. Mountains are hard to get really badly out of perspective, so they are easy from that point of view
2. Doing this teaches you to keep your values really on point. Which helps train you to see when a value is wrong.

Also, the end result always looks kind of cool :P
Keep up the good work though, definitely getting there!