Some issues to clear out.

Hy everyone. i just recently started doing  repaints and i would like to share some difficulties i am having.

Wilco ejects 170/190  i painted and now it shows all black in the fsx-  after painted in Photoshop cc i saved as TARGA and on DXTBmp i flipped and alpha / save as / texture dds / dds1 no alpha / saved.

I am doing this process for all the aircraft's that i cant find the paint kit pdf or manual. So currently i am stuck with this:

Wilco ejets 170/190 - fsx shows all black.

Milviz 737-200c - fsx shows the repaint but inside the aircraft is all black and i can only see the radios and MCP main control panel numbers.

Wilco Airbus vol 2 - fsx shows different colors than the one i used when i painted.

Whenever painting the aircraft is it better to open a layer on top of the paint kit the start painting or is it better to paint straight on the paint kit?

In Photoshop I am saving all as targa for these that i can find the paint kit pdf or manual, is that correct?

In dxtbmp i am saving as dds1 no alpha for these  i cant find the paint kit pdf or manual , is that correct?

Please send links so i can check and you message is welcomed. Thank you.