honestly, its alright for a first map i guess. though i think you really need to work on your large empty spaces. like @FireWarden1000 said, large empty spaces are ugly and you should probably focus on the smaller rooms. i recommend going back and playing all the first levels in all 4 episodes of doom 1 (e1m1, e2m1, e3m1, e4m1) in im too young to die (to minimize distractions) and take a look at EVERYTHING. i mean everything. windows, halls, texture alignment, and most importantly, differences in elevation. if you want purely a tech base, e1 is the best, if you want hell mixing with machines, e2 is the best, if you want hell, e3 is the best, and if you want.... earth mixed with hell? (idk what e4 resembles) then e4. just some things to take note of and i hope to see more maps improving in the future!