How to have a steady hand

You can try bracing your forearm against the edge of the bench to help steady the hand. Or use your other hand to steady the one painting if whatever you are painting doesn't need to be held.

There are varying types of stands equipped with clamps or grips and sometimes a magnifier that you can use.  Some come with gooseneck type arms and others could have different types of sliding armsso you can adjust where you want the piece or pieces to be while you work on them or let them dry.  Sometimes I'll rest my arms on the edge of my workbench and make sure I have a high intensity light ready.

Lots of light and magnification, surprisingly, helps a great deal with helping to steady your hands.  When you can actually see what you're doing, it increases precision.  Aside from that, if you can mount what you're painting on something to hold it for you, then you can use one hand to paint/place parts, while you use the other hand to help stabilize that hand.  I have a small suction-cup base table-top vise that I use.  It has a ball joint between the base and the jaws that I can move and lock into any position I need it in.  That really helps with detail work.

I agree with all that was said above. I'm 80 and have shaky hands. I got the idea of bracing my arms on the edge of the bench from the members here and it really helps a lot. I also use any and all types of clamps to hold parts steady.  Some use background music to help in calming. I use classical music, spanish guitar, and lots of others. Whatever works for you. Hope that this helps.

Jim 

Stay Safe.

I tend to use my pinky finger as a " pivot point" when gluing stuff, and especially when brush painting.

Just having a positive contact point between the workbench and  my hand helps quite a bit.

I have to rely now in touching my hands togehter at the base to do fine detail work, unless one part is held in a vise or something.  Then in that case resting forearm or wrist on bench works.  What you want to avoid is cantilevering both arms in the air and through your body to connect your hands.

HI;

    LikeFOX I am up in years( 78) and since an auto accident that damaged my upper body I shake bad. I keep my elbows on the table and built a ramp from LEGO's to support my Fore-Arms and Wrists.

     I usually only use the ramp when the parts are large. For small parts I use The Multiple "Extra-Hands "Tools a lot more. It works.