Safari Browser is not recommended to build your gangsheet. Building a gang sheet:Create a gang sheet with our easy-to-use software. Simply choose the gang sheet size needed and click on the 'Build your own Gangsheet' button above. From there, upload your art (or select a design from our library), resize, arrange, and save. If you need further instructions or help, please refer to the how-to video under the build button or contact us through our chat.Artwork Requirements:Please upload your PNG image(s) with a transparent background ONLY. Suggested 300dpi for best print quality. We will not be held liable for poor-resolution images and keep in mind printing DOES NOT change the quality of the image.**PLEASE KEEP IN MIND THAT WHATEVER YOU SUBMIT TO US IS WHAT WILL BE PRINTED WITH THE EXCEPTION OF FLUORESCENT COLORS. DIRECT-TO-FILM DOES NOT PRINT FLUORESCENT. Pressing instructions 100 % cotton temp 300 - 15 seconds pressure medium 50% cotton 50% polyester temp 275 20 seconds pressure low 100 % polyester temp 265 15 seconds pressure low nylon temp 240 15 seconds pressure low neoprene temp 240 20 seconds pressure low cardboard/wood temp 285 15 seconds pressure low ALIGN YOUR DESIGN WHERE YOU WANT IT TO PROTECT THE TRANSFER BY PLACING TEFLON OR PARCHMENT PAPER OVER IT. USING A HEAT PRESS FOLLOW THE ADVISED TIME AND TEMPERATURE FOR YOUR CERTAIN FABRIC. WAIT FOR THE TRANSFER TO COOL DOWN BEFORE PEELING IT OFF FOR THE FINAL STEP REPRESS WITH A TEFLON OR MARCHMENT PAPER FOR AN ADDITIONAL 5 SECONDS AND YOUR PRODUCT IS READY!