I was in the shed to use wifi for my phone cause in the house kids were on devices and dogs are loud while i was watching inside.I noticed it an hour after i was in there herd it shuffling in the tall grass thought it was a deer till my cat started growling and stared at the shed door.When i scanned the tree line and bushes with my big led light i thought i saw a head pop back into the dark,so i pretended i didnt see it and spoted my light to the left and herd it quickly get closer ,so i flashed the light back fast and it was very close now 30feet in front of me.We stared at each other for what seemed like forever but i know it was probably only 20 seconds,i started to think cause i was so scared i couldnt move,also it didnt move as i watched it i didnt see it breath so i also held my breath.I noticed its limbs and features while we staredat each other,greenish grey and very big mantis eyes,the skin was smooth broad shoulder but as you followed down got skinny,eyebrow ridge stuck out wide head with and up ward slant on the head,its eyes reflected green,light green,flecks of yellow and orange from my light,over 6ft tall a thought came in my head that it was going to grab me,so i said nothing out here silly kitty as loud as i could slammed the shed door and turned and ran to my house with the led behind my back faceing it,it seemed to not move when light hit it,so i thought this would give me a head start cause it moved fast the first time.When i got in to my husband and told him a whole hour pasted by it was now 12:40 i know i didnt look at this thing for an hour,my husband came out with me with his gun but it was gone.Now im scared i will not be out at night anymore,when im a night lover,bonfires mostly and stars,even in the day sometimes. i always feel like im being watched now. i have started to look into ufos and abductions,i have never read up on this before my experience and now belive i was abducted but have no memory of it.