a few months back i was here as well,
i have made quite bunch of maps with the tutorials provided by everyone here,
however, recently i have had some problems in my life, which drastically slowed down my building.
now, with a little bit of practice i feel that i can make a whole map.
However, as this will be my first map i would kindly ask you to provide me with some guide lines.
the idea is a map called penance, setting will be medieval and magical. maybe even demonic.
for this map i need a few things answered, maybe a few tips 'n tricks or guidelines.
Can i build a map for Q3 and play it in QL? I mean, are the models the same height and such?
(i know, Q3 doesn't support .PNG images, G_Gravity is different and the .bsp / .map / .Pk3 files are different, i know of all those problems)
1] how big is a Q3/QL model (Height, Length Width)?
2] How high does a model jump?
3] how high is the step height?
4] how high is a model when crouched?
5] how big should an arch/door be?
6] Can i make a sphere teleport? can i make a moving surface for a sphere? see picture below for what i mean.
(I can make a sphere, and then place a square teleport box around it, i know)

I thank you in advance, i know i can ask some stupid questions and google is my friend.
but you guys are way nicer than google is ;-)
Also, feel free to leave suggestions, tips, tricks and what not ;-)