I want to buy this wood stand and canopy. This is an old photo, Now the wood part is looking little old and no more shiny.
But I want to paint it to a darker color. Something like the bellow
I saw some online DIY videos such as this:
1-Use sandpaper to remove grit and pulish
I would use 120 grit paper to sand it. If it has polishes on it that may be a problem. Check to see if your sandpaper gets clogged, as it may be wax based.
2-Paint it with primer
I would a bonding primer. If you have to use a solvent to clean it in the previous step, use an oil primer, like Zinsser Cover Stain or such. If there's no solvent cleaning, use a latex primer.
3-paint with my desire color
Whatever your little heart desires.
You shouldn't need a clear coating. However, if you want some added protection you can use a latex poly.
Is it correct?
Is it possible? Does it going to be nice
How about if I want to make it shine again?
It should look great, if you're competent with the tools and procedure. You can use a gloss finish if you want the shine, and that should give more protection and sheen, eliminating the clear coating, which imo, isn't necessary.
Hope that helps. BTW, are you doing this with the tank filled?