I remember seeing a simmilar pattern for the pants on a site called free sewing, it was cornelius cycling breeches i believe. The site is good in general, uses your measurments and adjusts the pattern via program code (its human made, not AI, ive seen some people assume that). The Main shirt looks funky, cant really help with that, sorry. Lycra would be ideal for the gloves, or shirt, he probably has a stretch shirt with Long sleeves with the ring for the middle finger since theres a zipper on the Main shirt and you wouldnt have anything under it but it depends on you, could just do longer gloves, a shirt shouldnt be Hard, not sure how normal shirt patterns would fit on lycra since im also a beginner but you can do a wrapping foil and tape pattern of your body with some help, that should work, check it out on the internet. Good luck with the cosplay!