A week to struggle with staining, drying, sanding lifted parts several times and finally grain became calm. since repeated attempt caused strong color tone, i have decided to try sun-burst as below. I don't know whether this is proper approach to make it. but since i will not be able to use spray guns to graduate color, i think this is only option for me for sun-burst.

Click image for larger version. 

Name:	IMG_20170214_223020.jpg 
Views:	214 
Size:	173.4 KB 
ID:	17293 Click image for larger version. 

Name:	IMG_20170214_223058.jpg 
Views:	229 
Size:	250.2 KB 
ID:	17294

Now im thinking to start to apply Water-varnish finish. However, foolishly, I was not aware there are several types of varnish. As Simon pointed out, what i used for test piece was water-acrylic-base, to which I didn't pay attention. since then, I have checked about it and found acrylic is easier to handle, no odor, less harm though not strong, not durable and will takes long time to dry-out,,, yet have to go with water base, and found another solution could be water based Urethane varnish. it can be hardened and better glossy look. so i just hope this will be going well.

Name:  water urethane .png
Views: 290
Size:  86.5 KB Name:  water urethane 1.png
Views: 305
Size:  106.1 KB