An overdose of wall decals combined with poor paint-picking skills has left your humble abode a hot mess.Organize that DIY energy with help from online home decorating service I Heart Design by Avenue.Select a room style (vintage Bleecker Street, whimsical Rue Claudel). Upload photos of your space with a few basic measurements and preferences (keep the worn-but-beloved armchair; ditch everything else).For a reasonable fee ($3.50 per square foot), I Heart Design will send you a custom design box containing two possible floor plans with selected furnishings, paint and window treatment recommendations, and a miniature tool kit (tape measure, Post-it notes, masking tape).The L.A.-based team’s vision includes flea market finds (vintage seltzer bottles, stock market tumblers), large pieces from national retailers (Anthropologie, CB2), and finishing touches from trade-specific vendors (Arteriors lighting, Global Views accessories). Decide whether you want the company to purchase some — or all — of the items on your behalf or simply execute the ideas on your own. Either way, it’ll be a home improvement.Available online at iheartdesignbyavenue.com.Photo: Brent Dundore / Courtesy of I Heart Design by Avenue Online Up to 80% off ChaikenSF designer Julie Chaiken is famous for her expertly fitted slacks. Load up on those and more (sleek LBDs, cashmere cardis, swanky silk tops) while they’re up to 80 percent off on our sample sale site.