WIP - LEGO bricks

Working on some LEGOs for my son's 5th birthday invitation. I may or may not have forced him to pick this theme, but I'm pretty sure he's not mad about it. Heavily inspired by @flemmingrasmussen's awesome LEGO designs. I know I need to work on the logo...I should mention that I keep forgetting to grab an actual LEGO when I'm working on this. I also think I need to work on the colors, but any critique is welcome. Thanks for taking a look!