I have found a few itty-bitty tricks when working with rehabbing furniture that can make the job a lot easier...
When filling in handle holes; Put a piece of masking tape or painter's tape in the backside of the drawer to keep the wood filler from gooshing through. Once it's dry, remove the tape and then fill the backside in if there are any gaps.
If you have a hole that's too big for a screw for a knob or handle, use a lipped clothing grommet to make the hole smaller.
A washer can work as well.
I have to admit, in a pinch, I have also used a rubber band to take up space. :)
If you have some ugly carving that you want to get rid of, putty over and sand smooth to a
It can entirely transform a piece!
And for those weird to clamp areas and when you need a free hand;
painter's tape can hold appliques on while the glue dries.