what are your sticking points? i would just copy the ones out there now, pretty simple. Someone did a diy that was very informative but i cant remember where i saw it. Basically just gut the dresser and screw in the drawrs so they look functional. hinge the back with some wood for your access. Mylar the inside and add some small vents i learned the hard way how good ventilation pays for itself.
lol ya gut the insides and make the outside look like its a normal dresser if your going for the under cover look
but theres tons of DIY shit check it out!
I built a little box for the size of 2 plants. All i needed was 1 plywood 4x8 1/4 inch thick or a little bit thicker but not to thick so its not to heavy to move. Lowes or Home Depot cut so have them do it there. Cut the plywood into 4 sections 2x4, so the box is 4 feet around 2 feet deep and wide. Its big enough and ill post a pic. You want to use L shaped brackets to connect two pieces together, about 3 for each piece to connect. The door will be different. You will need 2-3 hinges to swing what ever way you want but depend on how bent the wood is, more hinges to make less bent for air holes. The top for you is gonna require tools to create a large enough hole for a ventilation tube to go into the box for good cool ventilation with all the hot air created by my lights. Use L shaped again 2 on 3 sides, not on the front to where the door is. Inside i have hooks screwed in the top board to hang lights, ill post a pic. Use chain and connectors.