The last one looks to have the closest service to that which Spoonflower offers. However, this company is a fair bit cheaper!! For example, fabpad's organic cotton sateen is $12.80 cents for 1 metre, compared to Spoonflower's $16.20. Big difference! You should look into this. There is a big demand for fabrics with exclusive, one of a kind designs for people to make their own clothing. With your degree, you should have no problem marketing your products. My degree is in Environmental Biology, not really something that can be sold online!