This will fit like an X-Small, Small, possibly Medium dependingon proportions
Web explore these collections of easy dress sewing patterns to make them at home with basic sewing skills
You can also snap a photo and tag @playswellwithbutter on Instagram
You can make a black long-sleeve maxi dress casual, sophisticated or whatever you want it to be
Hackwith Design House dress, $300, Hackwith Design House Topshop dress, $110, Topshop Den dress, $225, Den Wilfred dress, $165, Aritzia Loup Charmant dress, $375, Loup Charmant H&M dress, $34.99, H&M Frankie Shop dress, $169, Frankie Shop & Other Stories dress, $95, & Other Stories Reformation dress, $218, Reformation Violeta dress, $119.99, Mango Kowtow dress, $249, Kowtow Related Stories: 35 Ankle Boots for Fall Under $300, Because You Can Never Have Too Many The Fall Denim Trends You Haven't Thought of Yet 21 Non-Boring Outfit Ideas to Take Your Wardrobe From Summer to Fall
In terms of how much to use, generally speaking, use the same measurements you'd use in a regular load of laundry (oxygenated bleaches tend to come with a scoop for measuring dosages)