kind of, ive tried everything i know to do this. but i cant work it out. id be willing to pay someone to make a few things for me to 3d print off!!!!

Hi all, i have a project im working on. im VERY NEW to this. im stuck... at moment its a 2d drawing. but i need to make cut outs and holes in it but it wont let me.. i dont even know how to send pics of it on this!!!! PLZ HELP ME