Questions: Flirting

I know you can't have a stategy that works everytime, but I've always believe that having a step by step plan is good, even if it fails at step 1, it gives you some structure instead of just improvising every time (I'm not saying that is bad, but I feel it's jus not for me)

I usually aproach a girl and begin with some small talk, after a while I guide the conversation toward hobbies because I draw, so I show her my drawings in my phone, also I lift my phone with my tattoed arm so they notice it, from there I grab her by the lower back while showing her my drawings and explaining the meaning of my tattoo, and from there I pull them closer little by little and getting my face closer to theirs until I feel confidence enough to go for the kiss.

I have never flirt a lot, recently I decided to give it a try, and I feel I lack a lot of confidence and knowing if this step by step I came up with is any good would help me a lot

If we're standing I usually place my hand on their lower back while talking, and slowly pull them towards me
If we're sitting I put my hand on their leg, if we are next to each other I put in her inner thigh (not way too far to get closer to other things, but just enough to make my intentions clear.

I've never been one to flirt a lot, but sometimes I do these things and then stop because I loose my confidence, if a girl let's me put my hand in this ways is it a good sign? or is it just a regular thing and they could no get my intentions clear?