Thank you!
Progress, but with some troubles...
First I have masked some panels that will be painted in another color than yellow, to give some variety.
For yellow I used first Vallejo yellow, but that paint caused problems with my new paintbrush, obstructing it... So, after having cleaned it, I've used Gunze H4 that is slightly glossy... Hope that will not be the cause of some problems with oil paint, later...