Text exact alignment in a shape

[al.da.drone]

Thanks for the reply.
Takes me ages to work things out when it comes to graphics programs music production is my thing.
What I was wondering why I have got your attention is there any guides or tutorials about designing Tshirts on Gimp.
Also, some tutorial on YouTube says have the pixel setting at 11,000 by 8,5000 and when I tried to fill in an ellipse it took ages.
Is this necessary I normally have the pixels at half of that