Drilling kitchen doors...

If you have to drill from back of door out. Then I would use a piece of scrap wood held over the door surface pressed hard onto door
or use a very small drill to drill from back of door out then correct size drill from out of the door in

 

As suggested , a pilot drill and masking tape both sides.

 

Drilling from outside may cause small chips on the inside.
A zinc plated washer would cover them.

 

Always drill from face you can clamp wood to back of door to stop breakout so in other words you are drilling from face of door into wood

 

Handle screws are M4 from memory and have a large, flat head, inserted from the inside face of door and screws into handle

Any slight roughness to pre-drilled handle holes will be covered by screw head but, best practice to drill perfect, neat holes in the first place

2mm HSS drill bit and as above, clamp scrap wood to inside of door over screw hole area and pilot drill from outside into scrap wood

Then 4-4.5mm drill, same as above and drill again
Remove clamp and scrap wood and perfect, neat holes, ready for screws

If you have several doors to drill ready for handles, can knock up a simple jig to save time measuring each door

Can also buy various handle jigs but no point for diy / occasional use - YouTube for diy handle jig

 

All I use for a template is a bit of card and a nice new drill bit with, as above, masking tape. Never a problem.