Creating waterslides for your buildings is a fascinating project! If you're using an inkjet printer, consider sealing the decal paper post-printing to preserve the ink quality. To resize images without distortion, handy free tools like GIMP or IrfanView can do the trick. When it comes to inks and paper, some trial and error might be needed as brands and performance can vary by printer model. For tailored recommendations, peruse forums or reviews. Additionally, infill gyroid patterns could bring a unique touch to your designs