I usually take off the timing side case half first.
I lay the engine down, drive side down, on a table with a hole in it for the crankshaft to poke thru, or I put some pads on a cinder block and let the crankshaft poke down into the hole in the block.
You need to break the gasket seal first. Use a thin blade knife or putty knife to work into the gasket at the top around the hole for the barrel. As you get it to open up a little, wedge a thin blade screwdriver into that location to hold it open. Use a little lever action with the screwdriver to start it splitting. Try not to damage the aluminum case halves. You'll need a few screwdrivers or other things to hold the case open in various places, so that it doesn't drop down closed again. Then work around the whole gasket perimeter until it is all separated, and held up in various places with the screwdrivers, all even.
Then, you can carefully lift the case half off. Sometimes it binds on the studs, but lube the studs, and some wiggling will get it off.
This is the easy part.
Then, you have a decent chance that the crank will just lift out of the drive side case half. If it doesn't, then the crank is sticking in the 6305 ball bearing. This can be a bitch to get out, sometimes. Hopefully you won't have that happen, but if it does, let us know and we'll talk you thru it.