I want to make 1lb batch with intricate designs,
No...you don't. I mean, you may want to, but it is best not to...not for your first soap because it is very doubtful it will come out well and then you will be disappointed and depressed and blame the soap instead of your inexperience.
Your first soap should be something simple. If you absolutely HAVE to have color or scent...I recommend purchasing a 'trial' size FO and "Sample" Micas from a reputable soap supplier like BrambleBerry, Nuture Soap, Rustic Essentials, Elements Bath & Body, Wholesale Supplies Plus. Do NOT go to a 'craft' store like Hobby Lobby, Michael's, JoAnne's, AC Moore, etc.
What you do is go to your local "dollar" store and get yourself a couple of small plastic containers that will hold 3 cups of liquid...something square or rectangle. I made my very first soap in a carton that had juice (washed and dried). Take your recipe, put in a Soap Calculator with a 33% Lye Concentration and print it out.
Make sure you are wearing gloves (those will do) and eye protection (regular glasses won't do) BEFORE you open your Lye (Sodium Hydroxide). Weigh your Lye and Distilled Water carefully on a digital scale into separate containers and then pour your Lye slowly INTO the water (
NEVER EVER POUR WATER INTO LYE)...do it in the sink...and stir until the water is clear. Let the Lye Solution cool down...you can use it when you can put you palm against the side of the container and leave it there.
Measure out all the rest of your ingredients...make sure you melt you hard oils first before adding your soft oils. Stir them together and then add your Lye Solution and mix to a crepe or thin pancake batter consistency. Pour into mold. Cover with a light towel and stick it on top of your refrigerator and leave for 24 hours. You'll know its ready when you press lightly with your finger and it feels firm...like a medium cheddar cheese.
Unmold, cut into four 'bars' and put them on a plastic cutting board. Cover them again with a light towel and put back on the frig. At least once a once a week for the next six weeks, flip the soap over.
For lining, does the parchment paper work?
No, your soap will stick to it. What you want is "freezer" or "butcher's" which has a non-stick coating...more so than Wax Paper.